[ViewVC] Annotation of: cvs/AnyEvent/Changes

Revision history for Perl extension AnyEvent.

4.04 Mon May 26 08:03:31 CEST 2008
        - try to work around yet another windows bug: failed connects are reported
          as if it were out-of-band data. windows users: you suck. Only
          EV, Glib, Event and the pure perl backend can handle this condition.
        - optimize write algorithm in AnyEvent::Handle.
        - properly parse PERL_ANYEVENT_PROTOCOLS and use the info correctly.
        - tcp_connect now properly iterates through all targets.
        - check wether IPv6 sockets can actually be created, otherwise, disable ipv6
          support entirely. also hardcode some AF_INEt6 constants for the
          sake of perl 5.8.
        - vastly improved nameserver/suffix detection algorithm for windows
          (still a hack...)
        - try to use a fallback dns server if no dns servers could be found.
        - splatter around some local $SIG{__DIE__}'s to work around bad
          die handlers.

4.03 Sun May 25 05:05:57 CEST 2008
        - work around perl bugs on windows, where perl returns undocumented
          error codes for sysread, syswrite etc.
        - fix AnyEvent::Handle::unshift_read to really unshift and not push.
        - AnyEvent::Handle could sometimes stumble over 0-byte writes.
        - fix unpack_sockaddr, now works for AF_INET6 sockaddr's.
        - updated documentation.
        - lots of workarounds for perl 5.8 quirks.
        - implement a more flexible type system for both reads and writes
          in AnyEvent::Handle.
        - support IPv6 in tcp_server.
        - pass local hostname and port to the prepare callback in tcp_server.
        - make types extendable in AnyEvent::Handle.
        - croak, not die, in AnyEvent::Handle;

4.0  Sat May 24 19:58:08 CEST 2008
        - added (experimental) AnyEvent::DNS module.
        - added (experimental) AnyEvent::Socket module.
        - added (experiemntal) support for TLS/SSL in AnyEvent::Handle.
        - make condvar->end call ->send as documented.
        - make condvar constructor support the documented cb => argument.
        - overload condvars so you can use them instead of code references.
        - support more of the POSIX forms instead of a pure dotted quad for
          verbatim ip addresses.
        - AnyEvent::Socket::inet_aton will use AnyEvent::DNS now and not fork anymore.
        - try very hard not to freeze on broken windows perls.
        - make on_eof optional in AnyEvent::Handle.
        - support service names in tcp_connect and tcp_server.
        - work around netbsd/openbsd bug causing unix sockets not to
          become writable untill empty.
        - only make a dummy read for error detection when getpeername
          returns ENOTCONN.
        - defend AnyEvent::Util::inet_aton against Coro::LWP brutal
          override.
        - new AnyEvent::Guard::cancel.

3.5  Sat May 17 23:17:14 CEST 2008
        - gracefully deal with systems not defining CLOCK_MONOTONIC
          (as opposed to not supporting the clock itself, which worked in 3.41).
        - added AnyEvent::Util::tcp_connect and AnyEvent::Util::tcp_server
          helpers, to replace the ill-designed AnyEvent::Socket class.
        - added some examples (eg/connect, eg/handle).
        - added AnyEvent::Util::guard.
        - AnyEvent::Util now exports most of its functions.
        - fixed a bug in *_read_chunk, where the callback was called with $self as
          first and second argument.
        - simplified and fixed regex handling in AnyEvent::Handle::*_read_line.
        - fix manpage condvars examples to use new syntax.
        - considerably improve inet_aton with EV::ADNS backend to support
          cname chains (common dns configuration bug, e.g. with www.google.de)
          and aaaa records if no a record could be found.

3.41 Sun May 11 19:53:13 CEST 2008
        - work around a bug in perl 5.8.8's local. Reported by Yi Ma Mao.

3.4  Sun May 11 00:29:25 CEST 2008
        - complete re-implementation of condvars with a hopefully much mroe useful
          API (backward compatible functions exist but are undocumented).
        - AnyEvent::Handle fully rewritten with a hopefully more powerful API
          (still subject to change).
        - take advantage of CLOCK_MONOTONIC, if available, in AnyEvent::Impl::Perl.
        - provide AnyEvent::post_detect and @AnyEvent::post_detect, which
          allows module authors to avoid forcing event loop detection.
          (used by Coro::AIO, Coro::BDB, Coro::AnyEvent for example).
        - remove coro backends: Coro now provides generic support for AnyEvent
          via Coro::AnyEvent.

3.3  Mon Apr 28 09:51:06 CEST 2008
        - added AnyEvent::Handle, AnyEvent::Socket and AnyEvent::Util modules.
        - fix a bug in the pure perl backend that kept watchers alive
          when multiple watchers were registered for the same fh/poll combo.
        - add a benchmark section showing AnyEvent overhead and comparing
          the different event loops with each other.
        - prefer pure perl over tk when autoprobing, as it's about as fast,
          but doesn't crash with many watchers.
        - declare Qt support non-experimental.
        - clarify the confusing section about the file descriptor being
          kept alive.
        - document the race between loading of an event module and
          child processes exiting.
        - support POE as "backend" (with some caveats, POE is not generic
          enough, and darn slow).
        - support Wx and Prima through POE.
        - optimise perl backend to use 20% less memory and take advantage
          of typical timeout behaviour. It can now compete with
          select/poll-based C event loops in most cases (it is usually
          faster than Event and Glib :).
        - roughly cut EV memory use in half and increase its speed by 30%,
          by removing undocumented functionality. Did something similar
          to other event loops where possible.

3.2  Thu Apr 24 10:10:40 CEST 2008
        - do not die when anyevent watchers are destroyed while running callbacks
          in the pureperl backend (could only happen when two watchers are registered
          for the same fh/poll combo).
        - support autoloading for child watchers, was broken in all versions.
        - implement PERL_ANYEVENT_MODEL env variable.
        - (experimental) implement interface to the (very crashy/buggy) Event::Lib module.
        - (experimental) implement interface to the Qt module (cannot be autoprobed).
        - this release is IO:AnyEvent-proof.

3.12 Tue Apr 22 07:11:46 CEST 2008
        - reinstate AUTHOR section that got lost somehow.
        - do not hang in the testsuite with badly broken perls (activestate,
          strawberry...), but instead diagnose the problem and continue.
        - use INT instead of CHLD in an attempt to support broken windows perls
          better (this decreases the test quality, unfortunately).
        - do not send the signal to the process group
          (no problem for CHLD, bad for INT :).

3.11 Sat Apr 19 06:57:31 CEST 2008
        - major documentation rework.
        - document the fact that child watchers only watch for zombies.
        - fix the child watcher example.

3.1  Wed Apr 16 17:09:01 CEST 2008
        - work around recurring bugs in Tk by dup'ing filehandles, the
          only method with good success chances on Tk (the bugs apparently
          don't get fixed anytime soon).
        - lift the restriction of only one watcher per fh direction
          (as the Tk bug workaround also lifts it and only Tk imposed
          such strong limits).
        - changed probe order to prefer coro adaptors.
        - explain why recursion into the event loop is not supported
          unless the backend supports it (only Coro::EV does without
          any restrictions...).
        - add simple manpages for all backend modules.

3.0  Mon Apr  7 21:30:23 CEST 2008
        - Coro::Signal changed semantics, roll our own, also cleaning
          up the Coro implementation in general.
        - rename Coro backend to CoroEvent.
        - add some decision helping paragraph to the manpage that should
          help people to decide whether AnyEvent is the right thing for them.

2.9  Mon Jan 28 13:31:54 CET 2008
        - update for EV 3.0 API changes.

2.8  Sun Nov 25 15:06:03 CET 2007
        - waitpid can validly return 0. accept this fact of life
          instead of reporting it to any watchers.

2.7  Fri Nov 23 11:41:14 CET 2007
        - force use of AnyEvent::Impl::Perl in testsuite, there is
          too much breakage outside AnyEvent.
        - deliver signals synchronously in AnyEvent::Impl::Perl
          or any other event loop that relies on AnyEvents child
          watcher emulation. *Could* help with hanging testsuite
          (except when Event or EV are installed).

2.6  Fri Nov  9 20:36:35 CET 2007
        - fix bug in testsuite.
        - move EV adaptor modules to AnyEvent.
        - add Coro+EV adaptor module.

2.55 Tue Nov  6 17:41:32 CET 2007
        - add EV to the list of supported event models.
        - do not auto-reset pid watchers, pass pid and status to them.
        - allow a pid of zero to watch for all children in child watchers.

2.54 Wed Jul 18 17:36:23 CEST 2007
        - work around a perl bug that results in
          BEGIN not safe after errors--compilation aborted without
          any discernible reason or error message by once
          again not use'ing strict.

2.53 Sun Jul  8 10:51:53 CEST 2007
        - make Glib interface work again (spotted by elmex).

2.52 Wed Mar  7 18:36:16 CET 2007
        - child watchers stopped working permanently when
          all current child watchers were destroyed.

2.51 Mon Dec 11 21:33:24 CET 2006
        - work around bugs in perl where eval "require Module" returns
          true even if the module couldn't be loaded :/.

2.5  Mon Dec 11 02:15:28 CET 2006
        - avoid $AUTOLOAD because many perls corrupt it.
        - AnyEvent::detect forces autodetection.
        - implement signal watchers (experimental)
          (Tk does not support async signals (<= 804.027 at least),
          so they might get delayed indefinitely on Tk).
        - implement child watchers (experimental).
        - moved default condvar implementation into base module, simplifying
          most implementation modules.

2.1  Fri Nov 24 15:50:48 CET 2006
        - better docs.
        - simple testsuite.
        - added AnyEvent->one_event method for special purposes.

2.0  Wed Nov  1 02:21:30 CET 2006
        - INCOMPATIBLE CHANGE: poll can now either be "r" or "w" but not both.
        - INCOMPATIBLE CHANGE: io watcher callbacks have no arguments anymore.
        - EXPERIMENTAL:
          new pure-perl model added, AnyEvent now always finds a suitable
          event model.
        - improved documentation.
        - reduced cpu overhead.

1.02 Fri Jan 13 14:15:40 CET 2006
        - add COPYING to clarify license.

1.01 Sun Jan  8 05:48:09 CET 2006
        - correctly cancel Event timers, avoid memory leaks.

1.0  Sun Jan  8 05:40:58 CET 2006
        - allow third-party interfaces to be added at runtime.
        - fix version number.

0.9  Fri Dec 30 02:25:41 CET 2005
        - fixed errors in the documentation.
        - going back to using $VERSION as "load check",
          as suggested by Jörn Reder. Let's see why I stopped using
          this method.
        - add 'hup' to the list of events to receive for glib
          and generate 'rw' events for it, as some versions of
          glib seem to require this, while this breaks other
          (older) versions of glib.
        - implemented PERL_ANYEVENT_VERBOSE env variable.

0.3   Sun Dec  4 10:43:33 CET 2005
        - no changes to the code.
        - fixed documentation.
        - clarified some corner cases.
        - vastly improved documentation with a long example.

0.2   Thu Dec  1 22:18:49 CET 2005
        - check whether a valid method was called, to avoid endless loops.
        - move condvars into their own class (cleaner, safer).
        - don't die when some modules are not available.
        - Tk is too broken to allow for words. Will work once Tk works.

0.1   Thu Dec  1 19:44:57 CET 2005
        - spiced up and cleaned up for release.

0.01  Tue Sep 21 18:12:09 CEST 2004
        - original version; copied from Convert::Scalar.

Revision:	1.113
Committed:	Mon May 26 06:04:38 2008 UTC (15 years, 11 months ago) by root
Branch:	MAIN
CVS Tags:	rel-4_04
Changes since 1.112:	+1 -0 lines
Log Message:	4.04
#	User	Rev	Content
1	root	1.1	Revision history for Perl extension AnyEvent.
2
3	root	1.113	4.04 Mon May 26 08:03:31 CEST 2008
4	root	1.109	- try to work around yet another windows bug: failed connects are reported
5	root	1.110	as if it were out-of-band data. windows users: you suck. Only
6			EV, Glib, Event and the pure perl backend can handle this condition.
7	root	1.111	- optimize write algorithm in AnyEvent::Handle.
8	root	1.106	- properly parse PERL_ANYEVENT_PROTOCOLS and use the info correctly.
9	root	1.112	- tcp_connect now properly iterates through all targets.
10	root	1.104	- check wether IPv6 sockets can actually be created, otherwise, disable ipv6
11	root	1.107	support entirely. also hardcode some AF_INEt6 constants for the
12			sake of perl 5.8.
13	root	1.106	- vastly improved nameserver/suffix detection algorithm for windows
14			(still a hack...)
15			- try to use a fallback dns server if no dns servers could be found.
16	root	1.108	- splatter around some local $SIG{__DIE__}'s to work around bad
17			die handlers.
18	root	1.104
19	root	1.102	4.03 Sun May 25 05:05:57 CEST 2008
20	root	1.100	- work around perl bugs on windows, where perl returns undocumented
21			error codes for sysread, syswrite etc.
22	root	1.96	- fix AnyEvent::Handle::unshift_read to really unshift and not push.
23	root	1.97	- AnyEvent::Handle could sometimes stumble over 0-byte writes.
24	root	1.101	- fix unpack_sockaddr, now works for AF_INET6 sockaddr's.
25	root	1.100	- updated documentation.
26	root	1.103	- lots of workarounds for perl 5.8 quirks.
27	root	1.98	- implement a more flexible type system for both reads and writes
28			in AnyEvent::Handle.
29	root	1.101	- support IPv6 in tcp_server.
30			- pass local hostname and port to the prepare callback in tcp_server.
31	root	1.99	- make types extendable in AnyEvent::Handle.
32	root	1.100	- croak, not die, in AnyEvent::Handle;
33	root	1.96
34	root	1.95	4.0 Sat May 24 19:58:08 CEST 2008
35	root	1.88	- added (experimental) AnyEvent::DNS module.
36			- added (experimental) AnyEvent::Socket module.
37	root	1.93	- added (experiemntal) support for TLS/SSL in AnyEvent::Handle.
38	root	1.90	- make condvar->end call ->send as documented.
39			- make condvar constructor support the documented cb => argument.
40	root	1.94	- overload condvars so you can use them instead of code references.
41	root	1.93	- support more of the POSIX forms instead of a pure dotted quad for
42	root	1.89	verbatim ip addresses.
43	root	1.88	- AnyEvent::Socket::inet_aton will use AnyEvent::DNS now and not fork anymore.
44	root	1.87	- try very hard not to freeze on broken windows perls.
45	root	1.86	- make on_eof optional in AnyEvent::Handle.
46	root	1.83	- support service names in tcp_connect and tcp_server.
47	root	1.84	- work around netbsd/openbsd bug causing unix sockets not to
48			become writable untill empty.
49	root	1.81	- only make a dummy read for error detection when getpeername
50			returns ENOTCONN.
51	root	1.82	- defend AnyEvent::Util::inet_aton against Coro::LWP brutal
52			override.
53	root	1.91	- new AnyEvent::Guard::cancel.
54	root	1.81
55	root	1.80	3.5 Sat May 17 23:17:14 CEST 2008
56	root	1.79	- gracefully deal with systems not defining CLOCK_MONOTONIC
57			(as opposed to not supporting the clock itself, which worked in 3.41).
58	root	1.77	- added AnyEvent::Util::tcp_connect and AnyEvent::Util::tcp_server
59			helpers, to replace the ill-designed AnyEvent::Socket class.
60			- added some examples (eg/connect, eg/handle).
61			- added AnyEvent::Util::guard.
62			- AnyEvent::Util now exports most of its functions.
63	elmex	1.74	- fixed a bug in *_read_chunk, where the callback was called with $self as
64			first and second argument.
65	root	1.77	- simplified and fixed regex handling in AnyEvent::Handle::*_read_line.
66	root	1.72	- fix manpage condvars examples to use new syntax.
67	root	1.78	- considerably improve inet_aton with EV::ADNS backend to support
68			cname chains (common dns configuration bug, e.g. with www.google.de)
69			and aaaa records if no a record could be found.
70	root	1.72
71	root	1.71	3.41 Sun May 11 19:53:13 CEST 2008
72			- work around a bug in perl 5.8.8's local. Reported by Yi Ma Mao.
73
74	root	1.70	3.4 Sun May 11 00:29:25 CEST 2008
75			- complete re-implementation of condvars with a hopefully much mroe useful
76			API (backward compatible functions exist but are undocumented).
77	root	1.69	- AnyEvent::Handle fully rewritten with a hopefully more powerful API
78			(still subject to change).
79	root	1.63	- take advantage of CLOCK_MONOTONIC, if available, in AnyEvent::Impl::Perl.
80	root	1.68	- provide AnyEvent::post_detect and @AnyEvent::post_detect, which
81	root	1.67	allows module authors to avoid forcing event loop detection.
82			(used by Coro::AIO, Coro::BDB, Coro::AnyEvent for example).
83	root	1.66	- remove coro backends: Coro now provides generic support for AnyEvent
84			via Coro::AnyEvent.
85	root	1.63
86	root	1.62	3.3 Mon Apr 28 09:51:06 CEST 2008
87			- added AnyEvent::Handle, AnyEvent::Socket and AnyEvent::Util modules.
88	root	1.55	- fix a bug in the pure perl backend that kept watchers alive
89			when multiple watchers were registered for the same fh/poll combo.
90	root	1.54	- add a benchmark section showing AnyEvent overhead and comparing
91			the different event loops with each other.
92	root	1.56	- prefer pure perl over tk when autoprobing, as it's about as fast,
93			but doesn't crash with many watchers.
94	root	1.62	- declare Qt support non-experimental.
95	root	1.56	- clarify the confusing section about the file descriptor being
96			kept alive.
97			- document the race between loading of an event module and
98			child processes exiting.
99	root	1.53	- support POE as "backend" (with some caveats, POE is not generic
100	root	1.54	enough, and darn slow).
101	root	1.53	- support Wx and Prima through POE.
102	root	1.60	- optimise perl backend to use 20% less memory and take advantage
103	root	1.62	of typical timeout behaviour. It can now compete with
104	root	1.60	select/poll-based C event loops in most cases (it is usually
105			faster than Event and Glib :).
106	root	1.59	- roughly cut EV memory use in half and increase its speed by 30%,
107	root	1.62	by removing undocumented functionality. Did something similar
108			to other event loops where possible.
109	root	1.53
110	root	1.50	3.2 Thu Apr 24 10:10:40 CEST 2008
111	root	1.51	- do not die when anyevent watchers are destroyed while running callbacks
112			in the pureperl backend (could only happen when two watchers are registered
113			for the same fh/poll combo).
114			- support autoloading for child watchers, was broken in all versions.
115	root	1.47	- implement PERL_ANYEVENT_MODEL env variable.
116	root	1.49	- (experimental) implement interface to the (very crashy/buggy) Event::Lib module.
117			- (experimental) implement interface to the Qt module (cannot be autoprobed).
118	root	1.52	- this release is IO:AnyEvent-proof.
119	root	1.47
120	root	1.46	3.12 Tue Apr 22 07:11:46 CEST 2008
121			- reinstate AUTHOR section that got lost somehow.
122			- do not hang in the testsuite with badly broken perls (activestate,
123			strawberry...), but instead diagnose the problem and continue.
124			- use INT instead of CHLD in an attempt to support broken windows perls
125			better (this decreases the test quality, unfortunately).
126			- do not send the signal to the process group
127			(no problem for CHLD, bad for INT :).
128
129	root	1.45	3.11 Sat Apr 19 06:57:31 CEST 2008
130			- major documentation rework.
131			- document the fact that child watchers only watch for zombies.
132			- fix the child watcher example.
133
134	root	1.43	3.1 Wed Apr 16 17:09:01 CEST 2008
135	root	1.40	- work around recurring bugs in Tk by dup'ing filehandles, the
136	root	1.43	only method with good success chances on Tk (the bugs apparently
137			don't get fixed anytime soon).
138	root	1.42	- lift the restriction of only one watcher per fh direction
139			(as the Tk bug workaround also lifts it and only Tk imposed
140			such strong limits).
141	root	1.41	- changed probe order to prefer coro adaptors.
142			- explain why recursion into the event loop is not supported
143			unless the backend supports it (only Coro::EV does without
144			any restrictions...).
145			- add simple manpages for all backend modules.
146	root	1.40
147	root	1.39	3.0 Mon Apr 7 21:30:23 CEST 2008
148	root	1.38	- Coro::Signal changed semantics, roll our own, also cleaning
149			up the Coro implementation in general.
150			- rename Coro backend to CoroEvent.
151			- add some decision helping paragraph to the manpage that should
152	root	1.44	help people to decide whether AnyEvent is the right thing for them.
153	root	1.38
154	root	1.37	2.9 Mon Jan 28 13:31:54 CET 2008
155			- update for EV 3.0 API changes.
156
157	root	1.36	2.8 Sun Nov 25 15:06:03 CET 2007
158			- waitpid can validly return 0. accept this fact of life
159			instead of reporting it to any watchers.
160
161	root	1.35	2.7 Fri Nov 23 11:41:14 CET 2007
162	root	1.34	- force use of AnyEvent::Impl::Perl in testsuite, there is
163			too much breakage outside AnyEvent.
164	root	1.35	- deliver signals synchronously in AnyEvent::Impl::Perl
165			or any other event loop that relies on AnyEvents child
166			watcher emulation. Could help with hanging testsuite
167			(except when Event or EV are installed).
168	root	1.34
169	root	1.33	2.6 Fri Nov 9 20:36:35 CET 2007
170	root	1.32	- fix bug in testsuite.
171			- move EV adaptor modules to AnyEvent.
172			- add Coro+EV adaptor module.
173	root	1.26
174	root	1.31	2.55 Tue Nov 6 17:41:32 CET 2007
175	root	1.27	- add EV to the list of supported event models.
176	root	1.30	- do not auto-reset pid watchers, pass pid and status to them.
177	root	1.29	- allow a pid of zero to watch for all children in child watchers.
178	root	1.27
179	root	1.25	2.54 Wed Jul 18 17:36:23 CEST 2007
180			- work around a perl bug that results in
181			BEGIN not safe after errors--compilation aborted without
182			any discernible reason or error message by once
183			again not use'ing strict.
184
185	root	1.24	2.53 Sun Jul 8 10:51:53 CEST 2007
186			- make Glib interface work again (spotted by elmex).
187
188	root	1.22	2.52 Wed Mar 7 18:36:16 CET 2007
189			- child watchers stopped working permanently when
190	root	1.23	all current child watchers were destroyed.
191	root	1.22
192	root	1.21	2.51 Mon Dec 11 21:33:24 CET 2006
193			- work around bugs in perl where eval "require Module" returns
194			true even if the module couldn't be loaded :/.
195
196	root	1.20	2.5 Mon Dec 11 02:15:28 CET 2006
197	root	1.19	- avoid $AUTOLOAD because many perls corrupt it.
198	root	1.20	- AnyEvent::detect forces autodetection.
199			- implement signal watchers (experimental)
200			(Tk does not support async signals (<= 804.027 at least),
201			so they might get delayed indefinitely on Tk).
202			- implement child watchers (experimental).
203			- moved default condvar implementation into base module, simplifying
204			most implementation modules.
205	root	1.14
206	root	1.18	2.1 Fri Nov 24 15:50:48 CET 2006
207	root	1.16	- better docs.
208			- simple testsuite.
209	root	1.17	- added AnyEvent->one_event method for special purposes.
210	root	1.16
211	root	1.15	2.0 Wed Nov 1 02:21:30 CET 2006
212	root	1.13	- INCOMPATIBLE CHANGE: poll can now either be "r" or "w" but not both.
213			- INCOMPATIBLE CHANGE: io watcher callbacks have no arguments anymore.
214			- EXPERIMENTAL:
215			new pure-perl model added, AnyEvent now always finds a suitable
216			event model.
217	root	1.12	- improved documentation.
218			- reduced cpu overhead.
219
220	root	1.11	1.02 Fri Jan 13 14:15:40 CET 2006
221			- add COPYING to clarify license.
222
223	root	1.10	1.01 Sun Jan 8 05:48:09 CET 2006
224			- correctly cancel Event timers, avoid memory leaks.
225
226	root	1.9	1.0 Sun Jan 8 05:40:58 CET 2006
227	root	1.8	- allow third-party interfaces to be added at runtime.
228			- fix version number.
229
230	root	1.7	0.9 Fri Dec 30 02:25:41 CET 2005
231	root	1.6	- fixed errors in the documentation.
232	root	1.7	- going back to using $VERSION as "load check",
233			as suggested by Jörn Reder. Let's see why I stopped using
234			this method.
235			- add 'hup' to the list of events to receive for glib
236			and generate 'rw' events for it, as some versions of
237			glib seem to require this, while this breaks other
238			(older) versions of glib.
239			- implemented PERL_ANYEVENT_VERBOSE env variable.
240	root	1.6
241	root	1.5	0.3 Sun Dec 4 10:43:33 CET 2005
242			- no changes to the code.
243			- fixed documentation.
244			- clarified some corner cases.
245			- vastly improved documentation with a long example.
246
247	root	1.3	0.2 Thu Dec 1 22:18:49 CET 2005
248	root	1.44	- check whether a valid method was called, to avoid endless loops.
249	root	1.4	- move condvars into their own class (cleaner, safer).
250			- don't die when some modules are not available.
251			- Tk is too broken to allow for words. Will work once Tk works.
252	root	1.3
253	root	1.2	0.1 Thu Dec 1 19:44:57 CET 2005
254			- spiced up and cleaned up for release.
255
256	root	1.1	0.01 Tue Sep 21 18:12:09 CEST 2004
257			- original version; copied from Convert::Scalar.
258