Irc

===

* PeriodicCommand now raises a ValueError if it's created with a negative or
zero delay (meaning all subsequent commands are immediately due). This fixes
12.
* Renamed the parameters to the IRC object. If you use a custom event loop
and your code constructs the IRC object with keyword parameters, you will
need to update your code to use the new names, so::

IRC(fn_to_add_socket=adder, fn_to_remove_socket=remover, fn_to_add_timeout=timeout)

becomes::

IRC(on_connect=adder, on_disconnect=remover, on_schedule=timeout)

If you don't use a custom event loop or you pass the parameters
positionally, no change is necessary.

=====

* Fixed some unhandled exceptions in server client connections when the client
would disconnect in response to messages sent after select was called.

===

* Moved `LineBuffer` and `DecodingLineBuffer` from client to buffer module.
Backward-compatible references have been kept for now.
* Removed daemon mode and log-to-file options for server.
* Miscellaneous bugfixes in server.

=====

* Fix error in 2to3 conversion on irc/server.py (issue 11).

===

The IRC library is now licensed under the MIT license.

* Added irc/server.py, based on hircd by Ferry Boender.
* Added support for CAP command (pull request 10), thanks to Danneh Oaks.

===

Another backward-incompatible change. In irc 5.0, many of the unnecessary
getter functions have been removed and replaced with simple attributes. This
change addresses issue 2. In particular:

- Connection._get_socket() -> Connection.socket (including subclasses)
- Event.eventtype() -> Event.type
- Event.source() -> Event.source
- Event.target() -> Event.target
- Event.arguments() -> Event.arguments

The `nm_to_*` functions were removed. Instead, use the NickMask class
attributes.

These deprecated function aliases were removed from irc.client::

- parse_nick_modes -> modes.parse_nick_modes
- parse_channel_modes -> modes.parse_channel_modes
- generated_events -> events.generated
- protocol_events -> events.protocol
- numeric_events -> events.numeric
- all_events -> events.all
- irc_lower -> strings.lower

Also, the parameter name when constructing an event was renamed from
`eventtype` to simply `type`.