Remove split user mode handling.

Make some server events use the new formatter.

Remove who settings.

Switch to J8 Base64.

Remove channel who functionality.

This will go in a plugin instead.

Split giant method up.

Allow null message, avoid exploding event handlers.

Stop recursively publishing errors if things break

Fix NPE when trying to add timestampless lines.

Think we're going to stop supporting this. If there's a decent
case for it then it should be done as a DisplayProperty instead.

Use GroupChat in events.

Add some alias tests.

Replace Channel with GroupChat in commands.

(This depends on a plugins change)

Dont raise invocationtargetexceptions I see raise the exception itself.

Synchronise access to maplist.

Fixes #500

Bug fixes for the profiles dialog.

Switch to non-deprecated Raven methods.

Couple more.

Add some mode methods to GroupChat.

These are just proxies to ChannelInfo for now.

Tidy up CoreProfilesDialogModel and bit.

Add not empty validators for add/edit nicknames.

Add QueryNickChangeEvent formatter.