Make topics have proper dates.

Tidy up some unused/uncommonly used methods.

I think these will eventually go away entirely, once everything
is event-bus'd, but I'm not entirely sure how that works any
more :(

Minor tidying around displayable events.

Tidying of Server.

Split out error description getting into its own method. Other
minor changes.

Fix weird plugin path construction.

We have a path, it doesn't really make sense to take the filename,
then take the directory, then create a new path using those...

Extract config value retrieving from binder.

The logic to get a correctly typed setting given a class is
pretty general purpose, and will be useful elsewhere. Pull
it out of ConfigBinder and add some tests for it.

Bump gradle version.

Ensure module methods have unique names.

Dagger 2.0 appears to require each method in a module to have a
unique name. In some cases we've used overloads with the same name.

Also, remove a bunch of boilerplate javadoc.

Issue #601

Fix source of notice events.

We were raising notices as all coming from the local user, not
the person that sent the notice. This is... unideal.

Add some mode aliases for unreal.

Add basic test for PluginFileHandler.

Stop TabCompleter depending on CommandManager.

Tidy up plugin refreshing.

Add getPath utility method to JimFsRule.

This saves getting the FS and suffering the barrage of warnings
related to auto-closeable resources.

Remove error events and tidy up error management.

Move ProgramErrorAppender to logger.

Add a JUnit rule for using JimFS.

This means each test doesn't have to set it up and tear it down
manually (although only one actually did bother to tear it down :)).

Move update applying into the file handler.

Add a README.

Kick off some basic dev info by documenting the new error handling.

SLF4J Logging in the core.

Slf4j logging a few more things.

Change a couple of event bus error reportings.