Version 0.3.3 is available!

As usual, many new features and bug fixes:
- keys to undo/redo changes on command line,
- better lag indicator,
- new irc command /wallchops,
- display message in irc private buffer when nick is back on server after a /quit,
- reverse regex in a filter (with leading "!"),
- new option to confirm /quit,
- new option to align end of lines,
- hashtables in plugin API,
- many bugs fixed.