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.

Add a QueryQuitEvent, add a new nickname to QueryNickChangeEvent.

Fix precondition check.

Add more verbose messages.

Make query online only.

Add error logging to the event bus.

Stop throwing NPEs everywhere when getting stack trace.

Fix HighlightManager not respecting optionals.

Remove BaseConfigProvider.

This just provided default implementations of most of the
ReadOnlyConfigProvider interface, which as of J8 we can
now just put in the interface itself.

Switch channel away/back to new formatter.

Use new plugin syntax.