Add support for extension packages that add hooks and commands.
Significantly improve nick tracking.
Globally rate-limit message sending to prevent excess floods.
Use extended-join and account-notify for better admin authentication.
Automatically migrate config file on upgrades.
Validate groups.cfg on upgrade.
Add underscore, paraphrase, translate and randtranslate filters.
Allow filters to be set per-channel.
Improve message truncation and splitting.
Lock the output dir for parselogs/parsedata to prevent race conditions.
Log topic changes properly.
Issues Fixed: 473, 553, 766, 789, 823, 827, 862, 942, 996, 1015, 1033, 1039, 1050, 1068, 1076, 1092, 1096, 1099, 1101, 1104, 1117, 1122, 1123, 1126, 1128, 1130, 1132, 1135, 1138, 1142, 1152, 1155, 1159