Issue #750

Stop swimming against the tide and accept what most of the rest of
the world does.

While it adds an annoying depth to the actual source code, it makes
the root directory nicer (no more 'test-res' dirs), means we don't
have to override the gradle config, and makes it nicer to work in
IDEA 2016.1.

Allow colours in formats to be hex. Closes #631.

Fix ordering of highlighted messages. #669.

Formats defined in YAML can specify 'timestamps: false' to hide
the default timestamp for lines associated with that event.

Closes #633

This allows events to iterate over a collection property, and
adds formatting for whois results. It needs a lot of tidying,
but it's a start...

This allows formats that may be multi-line (whois results,
probably MOTD results at some point, etc...) to show a header
and footer around the actual content.

If we can't display any lines, there's not much point carrying on.