[ViewVC] Contents of: cvs/JSON-XS/Changes

Revision history for Perl extension JSON::XS

TODO: maybe detetc and croak on more invalid inputs (e.g. +-inf/nan)

2.3   Wed Aug 18 01:26:47 CEST 2010
        - make sure decoder doesn't change the decoding in the incremental
          parser (testcase provided by Hendrik Schumacher).
        - applied patch by DaTa for Data::Dumper support in json_xs.
        - added -t dump support to json_xs, using Data::Dump.
        - added -f eval support to json_xs.

2.29  Wed Mar 17 02:39:12 CET 2010
        - fix a memory leak when callbacks set using filter_json_object
          or filter_json_single_key_object were called (great testcase
          by Eric Wilhelm).

2.28  Thu Mar 11 20:30:46 CET 2010
        - implement our own atof function - perl's can be orders of
          magnitudes slower than even the system one. on the positive
          side, ours seems to be more exact in general than perl's.
          (testcase provided by Tim Meadowcroft).
        - clarify floating point conversion issues a bit.
        - update jpsykes csrf article url.
        - updated benchmark section - JSON::PP became much faster!

2.27  Thu Jan  7 07:35:08 CET 2010
        - support relaxed option inside the incremental parser
          (testcase provided by IKEGAMI via Makamaka).

2.26  Sat Oct 10 03:26:19 CEST 2009
        - big integers could become truncated (based on patch
          by Strobl Anton).
        - output format change: indent now adds a final newline, which is
          more expected and more true to the documentation.

2.25  Sat Aug  8 12:04:41 CEST 2009
        - the perl debugger completely breaks lvalue subs - try to work
          around the issue.
        - ignore RMAGICAL hashes w.r.t. CANONICAL.
        - try to work around a possible char signedness issue on aix.
        - require common sense.

2.24  Sat May 30 08:25:45 CEST 2009
        - the incremental parser did not update its parse offset
          pointer correctly when parsing utf8-strings (nicely
          debugged by Martin Evans).
        - appending a non-utf8-string to the incremental parser
          in utf8 mode failed to upgrade the string.
        - wording of parse error messages has been improved.

2.232 Sun Feb 22 11:12:25 CET 2009
        - use an exponential algorithm to extend strings, to
          help platforms with bad or abysmal==windows memory
          allocater performance, at the expense of some memory
          wastage (use shrink to recover this extra memory).
          (nicely analysed by Dmitry Karasik).

2.2311 Thu Feb 19 02:12:54 CET 2009
        - add a section "JSON and ECMAscript" to explain some
          incompatibilities between the two (problem was noted by
          various people).
        - add t/20_faihu.t.

2.231 Thu Nov 20 04:59:08 CET 2008
        - work around 5.10.0 magic bugs where manipulating magic values
          (such as $1) would permanently damage them as perl would
          ignore the magicalness, by making a full copy of the string,
          reported by Dmitry Karasik.
        - work around spurious warnings under older perl 5.8's.

2.23 Mon Sep 29 05:08:29 CEST 2008
        - fix a compilation problem when perl is not using char * as, well,
          char *.
        - use PL_hexdigit in favour of rolling our own.

2.2222 Sun Jul 20 18:49:00 CEST 2008
        - same game again, broken 5.10 finds yet another assertion
          failure, and the workaround causes additional runtime warnings.
          Work around the next assertion AND the warning. 5.10 seriously
          needs to adjust it's attitude against working code.

2.222 Sat Jul 19 06:15:34 CEST 2008
        - you work around one -DDEBUGGING assertion bug in perl 5.10
          just to hit the next one. work around this one, too.

2.22 Tue Jul 15 13:26:51 CEST 2008
        - allow higher nesting levels in incremental parser.
        - error out earlier in some cases in the incremental parser
          (as suggested by Yuval Kogman).
        - improve incr-parser test (Yuval Kogman).

2.21 Tue Jun  3 08:43:23 CEST 2008
        - (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
        - remove the experimental status of the incremental parser interface.
        - move =encoding around again, to avoid bugs with search.cpan.org.
          when can we finally have utf-8 in pod???
        - add ->incr_reset method.

2.2  Wed Apr 16 20:37:25 CEST 2008
        - lifted the log2 rounding restriction of max_depth and max_size.
        - make booleans mutable by creating a copy instead of handing out
          the same scalar (reported by pasha sadri).
        - added support for incremental json parsing (still EXPERIMENTAL).
        - implemented and added a json_xs command line utility that can convert
          from/to a number of serialisation formats - tell me if you need more.
        - implement allow_unknown/get_allow_unknown methods.
        - fixed documentation of max_depth w.r.t. higher and equal.
        - moved down =encoding directive a bit, too much breaks if it's the first
          pod directive :/.
        - removed documentation section on other modules, it became somewhat
          outdated and is nowadays mostly of historical interest.

2.1  Wed Mar 19 23:23:18 CET 2008
        - update documentation here and there: add a large section
          about utf8/latin1/ascii flags, add a security consideration
          and extend and clarify the JSON and YAML section.
        - medium speed enhancements when encoding/decoding non-ascii chars.
        - minor speedup in number encoding case.
        - extend and clarify the section on incompatibilities
          between YAML and JSON.
        - switch to static inline from just inline when using gcc.
        - add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
        - fix some issues with UV to JSON conversion of unknown impact.
        - published the yahoo locals search result used in benchmarks as the
          original url changes so comparison is impossible.

2.01 Wed Dec  5 11:40:28 CET 2007
        - INCOMPATIBLE API CHANGE: to_json and from_json have been
          renamed to encode_json/decode_json for JSON.pm compatibility.
          The old functions croak and might be replaced by JSON.pm
          comaptible versions in some later release.

2.0  Tue Dec  4 11:30:46 CET 2007
        - this is supposed to be the first version of JSON::XS
          compatible with version 2.0+ of the JSON module.
          Using the JSON module as frontend to JSON::XS should be
          as fast as using JSON::XS directly, so consider using it
          instead.
        - added get_* methods for all "simple" options.
        - make JSON::XS subclassable.

1.53 Tue Nov 13 23:58:33 CET 2007
        - minor doc clarifications.
        - fixed many doc typos (patch by Thomas L. Shinnick).

1.52 Mon Oct 15 03:22:06 CEST 2007
        - remove =encoding pod directive again, it confuses too many pod
          parsers :/.

1.51 Sat Oct 13 03:55:56 CEST 2007
        - encode empty arrays/hashes in a compact way when pretty is enabled.
        - apparently JSON::XS was used to find some bugs in the
          JSON_checker testsuite, so add (the corrected) JSON_checker tests to
          the testsuite.
        - quite a bit of doc updates/extension.
        - require 5.8.2, as this seems to be the first unicode-stable version.

1.5  Tue Aug 28 04:05:38 CEST 2007
        - add support for tied hashes, based on ideas and testcase by
          Marcus Holland-Moritz.
        - implemented relaxed parsing mode where some extensions are being
          accepted. generation is still JSON-only.

1.44 Wed Aug 22 01:02:44 CEST 2007
        - very experimental process-emulation support, slowing everything down.
          the horribly broken perl threads are still not supported - YMMV.

1.43 Thu Jul 26 13:26:37 CEST 2007
        - convert big json numbers exclusively consisting of digits to NV
          only when there is no loss of precision, otherwise to string.

1.42 Tue Jul 24 00:51:18 CEST 2007
        - fix a crash caused by not handling missing array elements
          (report and testcase by Jay Kuri).

1.41 Tue Jul 10 18:21:44 CEST 2007
        - fix compilation with NDEBUG (assert side-effect),
          affects convert_blessed only.
        - fix a bug in decode filters calling ENTER; SAVETMPS;
          one time too often.
        - catch a typical error in TO_JSON methods.
        - antique-ised XS.xs again to work with outdated
          C compilers (windows...).

1.4  Mon Jul  2 10:06:30 CEST 2007
        - add convert_blessed setting.
        - encode did not catch all blessed objects, encoding their
          contents in most cases. This has been fixed by introducing
          the allow_blessed setting.
        - added filter_json_object and filter_json_single_key_object
          settings that specify a callback to be called when
          all/specific json objects are encountered.
        - assume that most object keys are simple ascii words and
          optimise this case, penalising the general case. This can
          speed up decoding by 30% in typical cases and gives
          a smaller and faster perl hash.
        - implemented simpleminded, optional resource size checking
          in decode_json.
        - remove objToJson/jsonToObj aliases, as the next version
          of JSON will not have them either.
        - bit the bullet and converted the very simple json object
          into a more complex one.
        - work around a bug where perl wrongly claims an integer
          is not an integer.
        - unbundle JSON::XS::Boolean into own pm file so Storable
          and similar modules can resolve the overloading when thawing.

1.3  Sun Jun 24 01:55:02 CEST 2007
        - make JSON::XS::true and false special overloaded objects
          and return those instead of 1 and 0 for those json atoms
          (JSON::PP compatibility is NOT achieved yet).
        - add JSON::XS::is_bool predicate to test for those special
          values.
        - add a reference to
          http://jpsykes.com/47/practical-csrf-and-json-security.
        - removed require 5.8.8 again, it is just not very expert-friendly.
          Also try to be more compatible with slightly older versions,
          which are not recommended (because they are buggy).

1.24 Mon Jun 11 05:40:49 CEST 2007
        - added informative section on JSON-as-YAML.
        - get rid of some c99-isms again.
        - localise dec->cur in decode_str, speeding up
          string decoding considerably (>15% on my amd64 + gcc).
        - increased SHORT_STRING_LEN to 16kb: stack space is
          usually plenty, and this actually saves memory
          when !shrinking as short strings will fit perfectly.

1.23 Wed Jun  6 20:13:06 CEST 2007
        - greatly improved small integer encoding and decoding speed.
        - implement a number of µ-optimisations.
        - updated benchmarks.

1.22 Thu May 24 00:07:25 CEST 2007
        - require 5.8.8 explicitly as older perls do not seem to offer
          the required macros.
        - possibly made it compile on so-called C compilers by microsoft.

1.21 Wed May  9 18:40:32 CEST 2007
        - character offset reported for trailing garbage was random.

1.2  Wed May  9 18:35:01 CEST 2007
        - decode did not work with magical scalars (doh!).
        - added latin1 flag to produce JSON texts in the latin1 subset
          of unicode.
        - flag trailing garbage as error.
        - new decode_prefix method that returns the number
          of characters consumed by a decode.
        - max octets/char in perls UTF-X is actually 13, not 11,
          as pointed out by Glenn Linderman.
        - fixed typoe reported by YAMASHINA Hio.

1.11 Mon Apr  9 07:05:49 CEST 2007
        - properly 0-terminate sv's returned by encode to help
          C libraries that expect that 0 to be there.
        - partially "port" JSON from C to microsofts fucking broken
          pseudo-C. They should be burned to the ground for pissing
          on standards. And I should be stoned for even trying to
          support this filthy excuse for a c compiler.

1.1  Wed Apr  4 01:45:00 CEST 2007
        - clarify documentation (pointed out by Quinn Weaver).
        - decode_utf8 sometimes did not correctly flag errors,
          leading to segfaults.
        - further reduced default nesting depth to 512 due to the test
          failure by that anonymous "chris" whose e-mail address seems
          to be impossible to get. Tests on other freebsd systems indicate
          that this is likely a problem in his/her configuration and not this
          module.
        - renamed json => JSON in error messages.
        - corrected the character offset in some error messages.

1.01 Sat Mar 31 16:15:40 CEST 2007
        - do not segfault when from_json/decode gets passed
          a non-string object (reported by Florian Ragwitz).
          This has no effect on normal operation.

1.0  Thu Mar 29 04:43:34 CEST 2007
        - the long awaited (by me) 1.0 version.
        - add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
          true and false.
        - add some more notes to shrink, as suggested by Alex Efros.
        - improve testsuite.
        - halve the default nesting depth limit, to hopefully make it
          work on Freebsd (unfortunately, the cpan tester did not
          send me his report, so I cannot ask about the stack limit on fbsd).

0.8  Mon Mar 26 00:10:48 CEST 2007
        - fix a memleak when decoding hashes.
        - export jsonToBj and objToJson as aliases
          to to_json and from_json, to reduce incompatibilities
          between JSON/JSON::PC and JSON::XS. (experimental).
        - implement a maximum nesting depth for both en- and de-coding.
        - added a security considerations sections.

0.7  Sun Mar 25 01:46:30 CET 2007
        - code cleanup.
        - fix a memory overflow bug when indenting.
        - pretty-printing now up to 15% faster.
        - improve decoding speed of strings by
          up to 50% by specialcasing short strings.
        - further decoding speedups for strings using
          lots of \u escapes.
        - improve utf8 decoding speed for U+80 .. U+7FF.

0.5  Sat Mar 24 20:41:51 CET 2007
        - added the UTF-16 encoding example hinted at in previous
          versions.
        - minor documentation fixes.
        - fix a bug in and optimise canonicalising fastpath
          (reported by Craig Manley).
        - remove a subtest that breaks with bleadperl (reported
          by Andreas König).

0.31 Sat Mar 24 02:14:34 CET 2007
        - documentation updates.
        - do some casting to hopefully fix Andreas' problem.
        - nuke bogus json rpc stuff.

0.3  Fri Mar 23 19:33:21 CET 2007
        - remove spurious PApp::Util reference (John McNamara).
        - adapted lots of tests from other json modules
          (idea by Chris Carline).
        - documented mapping from json to perl and vice versa.
        - improved the documentation by adding more examples.
        - added short escaping forms, reducing the created
          json texts a bit.
        - added shrink flag.
        - when flag methods are called without enable argument
          they will by default enable their flag.
        - considerably improved string encoding speed (at least
          with gcc 4).
        - added a test that covers lots of different characters.
        - clarified some error messages.
        - error messages now use correct character offset
          with F_UTF8.
        - improve the "no bytes" and "no warnings" hacks in
          case the called functions do... stuff.
        - croak when encoding to ascii and an out-of-range
          (non-unicode) codepoint is encountered.

0.2  Fri Mar 23 00:23:34 CET 2007
        - the "could not sleep without debugging release".
          it should basically work now, with many bugs as
          no production tests have been run yet.
        - added more testcases.
        - the expected shitload of bugfixes.
        - handle utf8 flag correctly in decode.
        - fix segfault in decoder.
        - utf8n_to_uvuni sets retlen to -1, but retlen is an
          unsigned types (argh).
        - fix decoding of utf-8 strings.
        - improved error diagnostics.
        - fix decoding of 'null'.
        - fix parsing of empty array/hashes
        - silence warnings when we prepare the croak message.

0.1   Thu Mar 22 22:13:43 CET 2007
        - first release, very untested, basically just to claim
          the namespace.
 
0.01  Thu Mar 22 06:08:12 CET 2007
        - original version; cloned from Convert-Scalar

Revision:	1.147
Committed:	Mon Feb 21 15:38:06 2011 UTC (13 years, 2 months ago) by root
Branch:	MAIN
Changes since 1.146:	+2 -0 lines
Log Message:	* empty log message *
#	Content
1	Revision history for Perl extension JSON::XS
2
3	TODO: maybe detetc and croak on more invalid inputs (e.g. +-inf/nan)
4
5	2.3 Wed Aug 18 01:26:47 CEST 2010
6	- make sure decoder doesn't change the decoding in the incremental
7	parser (testcase provided by Hendrik Schumacher).
8	- applied patch by DaTa for Data::Dumper support in json_xs.
9	- added -t dump support to json_xs, using Data::Dump.
10	- added -f eval support to json_xs.
11
12	2.29 Wed Mar 17 02:39:12 CET 2010
13	- fix a memory leak when callbacks set using filter_json_object
14	or filter_json_single_key_object were called (great testcase
15	by Eric Wilhelm).
16
17	2.28 Thu Mar 11 20:30:46 CET 2010
18	- implement our own atof function - perl's can be orders of
19	magnitudes slower than even the system one. on the positive
20	side, ours seems to be more exact in general than perl's.
21	(testcase provided by Tim Meadowcroft).
22	- clarify floating point conversion issues a bit.
23	- update jpsykes csrf article url.
24	- updated benchmark section - JSON::PP became much faster!
25
26	2.27 Thu Jan 7 07:35:08 CET 2010
27	- support relaxed option inside the incremental parser
28	(testcase provided by IKEGAMI via Makamaka).
29
30	2.26 Sat Oct 10 03:26:19 CEST 2009
31	- big integers could become truncated (based on patch
32	by Strobl Anton).
33	- output format change: indent now adds a final newline, which is
34	more expected and more true to the documentation.
35
36	2.25 Sat Aug 8 12:04:41 CEST 2009
37	- the perl debugger completely breaks lvalue subs - try to work
38	around the issue.
39	- ignore RMAGICAL hashes w.r.t. CANONICAL.
40	- try to work around a possible char signedness issue on aix.
41	- require common sense.
42
43	2.24 Sat May 30 08:25:45 CEST 2009
44	- the incremental parser did not update its parse offset
45	pointer correctly when parsing utf8-strings (nicely
46	debugged by Martin Evans).
47	- appending a non-utf8-string to the incremental parser
48	in utf8 mode failed to upgrade the string.
49	- wording of parse error messages has been improved.
50
51	2.232 Sun Feb 22 11:12:25 CET 2009
52	- use an exponential algorithm to extend strings, to
53	help platforms with bad or abysmal==windows memory
54	allocater performance, at the expense of some memory
55	wastage (use shrink to recover this extra memory).
56	(nicely analysed by Dmitry Karasik).
57
58	2.2311 Thu Feb 19 02:12:54 CET 2009
59	- add a section "JSON and ECMAscript" to explain some
60	incompatibilities between the two (problem was noted by
61	various people).
62	- add t/20_faihu.t.
63
64	2.231 Thu Nov 20 04:59:08 CET 2008
65	- work around 5.10.0 magic bugs where manipulating magic values
66	(such as $1) would permanently damage them as perl would
67	ignore the magicalness, by making a full copy of the string,
68	reported by Dmitry Karasik.
69	- work around spurious warnings under older perl 5.8's.
70
71	2.23 Mon Sep 29 05:08:29 CEST 2008
72	- fix a compilation problem when perl is not using char * as, well,
73	char *.
74	- use PL_hexdigit in favour of rolling our own.
75
76	2.2222 Sun Jul 20 18:49:00 CEST 2008
77	- same game again, broken 5.10 finds yet another assertion
78	failure, and the workaround causes additional runtime warnings.
79	Work around the next assertion AND the warning. 5.10 seriously
80	needs to adjust it's attitude against working code.
81
82	2.222 Sat Jul 19 06:15:34 CEST 2008
83	- you work around one -DDEBUGGING assertion bug in perl 5.10
84	just to hit the next one. work around this one, too.
85
86	2.22 Tue Jul 15 13:26:51 CEST 2008
87	- allow higher nesting levels in incremental parser.
88	- error out earlier in some cases in the incremental parser
89	(as suggested by Yuval Kogman).
90	- improve incr-parser test (Yuval Kogman).
91
92	2.21 Tue Jun 3 08:43:23 CEST 2008
93	- (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
94	- remove the experimental status of the incremental parser interface.
95	- move =encoding around again, to avoid bugs with search.cpan.org.
96	when can we finally have utf-8 in pod???
97	- add ->incr_reset method.
98
99	2.2 Wed Apr 16 20:37:25 CEST 2008
100	- lifted the log2 rounding restriction of max_depth and max_size.
101	- make booleans mutable by creating a copy instead of handing out
102	the same scalar (reported by pasha sadri).
103	- added support for incremental json parsing (still EXPERIMENTAL).
104	- implemented and added a json_xs command line utility that can convert
105	from/to a number of serialisation formats - tell me if you need more.
106	- implement allow_unknown/get_allow_unknown methods.
107	- fixed documentation of max_depth w.r.t. higher and equal.
108	- moved down =encoding directive a bit, too much breaks if it's the first
109	pod directive :/.
110	- removed documentation section on other modules, it became somewhat
111	outdated and is nowadays mostly of historical interest.
112
113	2.1 Wed Mar 19 23:23:18 CET 2008
114	- update documentation here and there: add a large section
115	about utf8/latin1/ascii flags, add a security consideration
116	and extend and clarify the JSON and YAML section.
117	- medium speed enhancements when encoding/decoding non-ascii chars.
118	- minor speedup in number encoding case.
119	- extend and clarify the section on incompatibilities
120	between YAML and JSON.
121	- switch to static inline from just inline when using gcc.
122	- add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
123	- fix some issues with UV to JSON conversion of unknown impact.
124	- published the yahoo locals search result used in benchmarks as the
125	original url changes so comparison is impossible.
126
127	2.01 Wed Dec 5 11:40:28 CET 2007
128	- INCOMPATIBLE API CHANGE: to_json and from_json have been
129	renamed to encode_json/decode_json for JSON.pm compatibility.
130	The old functions croak and might be replaced by JSON.pm
131	comaptible versions in some later release.
132
133	2.0 Tue Dec 4 11:30:46 CET 2007
134	- this is supposed to be the first version of JSON::XS
135	compatible with version 2.0+ of the JSON module.
136	Using the JSON module as frontend to JSON::XS should be
137	as fast as using JSON::XS directly, so consider using it
138	instead.
139	- added get_* methods for all "simple" options.
140	- make JSON::XS subclassable.
141
142	1.53 Tue Nov 13 23:58:33 CET 2007
143	- minor doc clarifications.
144	- fixed many doc typos (patch by Thomas L. Shinnick).
145
146	1.52 Mon Oct 15 03:22:06 CEST 2007
147	- remove =encoding pod directive again, it confuses too many pod
148	parsers :/.
149
150	1.51 Sat Oct 13 03:55:56 CEST 2007
151	- encode empty arrays/hashes in a compact way when pretty is enabled.
152	- apparently JSON::XS was used to find some bugs in the
153	JSON_checker testsuite, so add (the corrected) JSON_checker tests to
154	the testsuite.
155	- quite a bit of doc updates/extension.
156	- require 5.8.2, as this seems to be the first unicode-stable version.
157
158	1.5 Tue Aug 28 04:05:38 CEST 2007
159	- add support for tied hashes, based on ideas and testcase by
160	Marcus Holland-Moritz.
161	- implemented relaxed parsing mode where some extensions are being
162	accepted. generation is still JSON-only.
163
164	1.44 Wed Aug 22 01:02:44 CEST 2007
165	- very experimental process-emulation support, slowing everything down.
166	the horribly broken perl threads are still not supported - YMMV.
167
168	1.43 Thu Jul 26 13:26:37 CEST 2007
169	- convert big json numbers exclusively consisting of digits to NV
170	only when there is no loss of precision, otherwise to string.
171
172	1.42 Tue Jul 24 00:51:18 CEST 2007
173	- fix a crash caused by not handling missing array elements
174	(report and testcase by Jay Kuri).
175
176	1.41 Tue Jul 10 18:21:44 CEST 2007
177	- fix compilation with NDEBUG (assert side-effect),
178	affects convert_blessed only.
179	- fix a bug in decode filters calling ENTER; SAVETMPS;
180	one time too often.
181	- catch a typical error in TO_JSON methods.
182	- antique-ised XS.xs again to work with outdated
183	C compilers (windows...).
184
185	1.4 Mon Jul 2 10:06:30 CEST 2007
186	- add convert_blessed setting.
187	- encode did not catch all blessed objects, encoding their
188	contents in most cases. This has been fixed by introducing
189	the allow_blessed setting.
190	- added filter_json_object and filter_json_single_key_object
191	settings that specify a callback to be called when
192	all/specific json objects are encountered.
193	- assume that most object keys are simple ascii words and
194	optimise this case, penalising the general case. This can
195	speed up decoding by 30% in typical cases and gives
196	a smaller and faster perl hash.
197	- implemented simpleminded, optional resource size checking
198	in decode_json.
199	- remove objToJson/jsonToObj aliases, as the next version
200	of JSON will not have them either.
201	- bit the bullet and converted the very simple json object
202	into a more complex one.
203	- work around a bug where perl wrongly claims an integer
204	is not an integer.
205	- unbundle JSON::XS::Boolean into own pm file so Storable
206	and similar modules can resolve the overloading when thawing.
207
208	1.3 Sun Jun 24 01:55:02 CEST 2007
209	- make JSON::XS::true and false special overloaded objects
210	and return those instead of 1 and 0 for those json atoms
211	(JSON::PP compatibility is NOT achieved yet).
212	- add JSON::XS::is_bool predicate to test for those special
213	values.
214	- add a reference to
215	http://jpsykes.com/47/practical-csrf-and-json-security.
216	- removed require 5.8.8 again, it is just not very expert-friendly.
217	Also try to be more compatible with slightly older versions,
218	which are not recommended (because they are buggy).
219
220	1.24 Mon Jun 11 05:40:49 CEST 2007
221	- added informative section on JSON-as-YAML.
222	- get rid of some c99-isms again.
223	- localise dec->cur in decode_str, speeding up
224	string decoding considerably (>15% on my amd64 + gcc).
225	- increased SHORT_STRING_LEN to 16kb: stack space is
226	usually plenty, and this actually saves memory
227	when !shrinking as short strings will fit perfectly.
228
229	1.23 Wed Jun 6 20:13:06 CEST 2007
230	- greatly improved small integer encoding and decoding speed.
231	- implement a number of µ-optimisations.
232	- updated benchmarks.
233
234	1.22 Thu May 24 00:07:25 CEST 2007
235	- require 5.8.8 explicitly as older perls do not seem to offer
236	the required macros.
237	- possibly made it compile on so-called C compilers by microsoft.
238
239	1.21 Wed May 9 18:40:32 CEST 2007
240	- character offset reported for trailing garbage was random.
241
242	1.2 Wed May 9 18:35:01 CEST 2007
243	- decode did not work with magical scalars (doh!).
244	- added latin1 flag to produce JSON texts in the latin1 subset
245	of unicode.
246	- flag trailing garbage as error.
247	- new decode_prefix method that returns the number
248	of characters consumed by a decode.
249	- max octets/char in perls UTF-X is actually 13, not 11,
250	as pointed out by Glenn Linderman.
251	- fixed typoe reported by YAMASHINA Hio.
252
253	1.11 Mon Apr 9 07:05:49 CEST 2007
254	- properly 0-terminate sv's returned by encode to help
255	C libraries that expect that 0 to be there.
256	- partially "port" JSON from C to microsofts fucking broken
257	pseudo-C. They should be burned to the ground for pissing
258	on standards. And I should be stoned for even trying to
259	support this filthy excuse for a c compiler.
260
261	1.1 Wed Apr 4 01:45:00 CEST 2007
262	- clarify documentation (pointed out by Quinn Weaver).
263	- decode_utf8 sometimes did not correctly flag errors,
264	leading to segfaults.
265	- further reduced default nesting depth to 512 due to the test
266	failure by that anonymous "chris" whose e-mail address seems
267	to be impossible to get. Tests on other freebsd systems indicate
268	that this is likely a problem in his/her configuration and not this
269	module.
270	- renamed json => JSON in error messages.
271	- corrected the character offset in some error messages.
272
273	1.01 Sat Mar 31 16:15:40 CEST 2007
274	- do not segfault when from_json/decode gets passed
275	a non-string object (reported by Florian Ragwitz).
276	This has no effect on normal operation.
277
278	1.0 Thu Mar 29 04:43:34 CEST 2007
279	- the long awaited (by me) 1.0 version.
280	- add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
281	true and false.
282	- add some more notes to shrink, as suggested by Alex Efros.
283	- improve testsuite.
284	- halve the default nesting depth limit, to hopefully make it
285	work on Freebsd (unfortunately, the cpan tester did not
286	send me his report, so I cannot ask about the stack limit on fbsd).
287
288	0.8 Mon Mar 26 00:10:48 CEST 2007
289	- fix a memleak when decoding hashes.
290	- export jsonToBj and objToJson as aliases
291	to to_json and from_json, to reduce incompatibilities
292	between JSON/JSON::PC and JSON::XS. (experimental).
293	- implement a maximum nesting depth for both en- and de-coding.
294	- added a security considerations sections.
295
296	0.7 Sun Mar 25 01:46:30 CET 2007
297	- code cleanup.
298	- fix a memory overflow bug when indenting.
299	- pretty-printing now up to 15% faster.
300	- improve decoding speed of strings by
301	up to 50% by specialcasing short strings.
302	- further decoding speedups for strings using
303	lots of \u escapes.
304	- improve utf8 decoding speed for U+80 .. U+7FF.
305
306	0.5 Sat Mar 24 20:41:51 CET 2007
307	- added the UTF-16 encoding example hinted at in previous
308	versions.
309	- minor documentation fixes.
310	- fix a bug in and optimise canonicalising fastpath
311	(reported by Craig Manley).
312	- remove a subtest that breaks with bleadperl (reported
313	by Andreas König).
314
315	0.31 Sat Mar 24 02:14:34 CET 2007
316	- documentation updates.
317	- do some casting to hopefully fix Andreas' problem.
318	- nuke bogus json rpc stuff.
319
320	0.3 Fri Mar 23 19:33:21 CET 2007
321	- remove spurious PApp::Util reference (John McNamara).
322	- adapted lots of tests from other json modules
323	(idea by Chris Carline).
324	- documented mapping from json to perl and vice versa.
325	- improved the documentation by adding more examples.
326	- added short escaping forms, reducing the created
327	json texts a bit.
328	- added shrink flag.
329	- when flag methods are called without enable argument
330	they will by default enable their flag.
331	- considerably improved string encoding speed (at least
332	with gcc 4).
333	- added a test that covers lots of different characters.
334	- clarified some error messages.
335	- error messages now use correct character offset
336	with F_UTF8.
337	- improve the "no bytes" and "no warnings" hacks in
338	case the called functions do... stuff.
339	- croak when encoding to ascii and an out-of-range
340	(non-unicode) codepoint is encountered.
341
342	0.2 Fri Mar 23 00:23:34 CET 2007
343	- the "could not sleep without debugging release".
344	it should basically work now, with many bugs as
345	no production tests have been run yet.
346	- added more testcases.
347	- the expected shitload of bugfixes.
348	- handle utf8 flag correctly in decode.
349	- fix segfault in decoder.
350	- utf8n_to_uvuni sets retlen to -1, but retlen is an
351	unsigned types (argh).
352	- fix decoding of utf-8 strings.
353	- improved error diagnostics.
354	- fix decoding of 'null'.
355	- fix parsing of empty array/hashes
356	- silence warnings when we prepare the croak message.
357
358	0.1 Thu Mar 22 22:13:43 CET 2007
359	- first release, very untested, basically just to claim
360	the namespace.
361
362	0.01 Thu Mar 22 06:08:12 CET 2007
363	- original version; cloned from Convert-Scalar
364