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.

All callbacks are now done through getCallback, which offers
type safety (gasp!) and is potentially extensible in the future
(wow!).

This means that nothing can depend on callbacks existing, so
there are two functional changes:

 - the parser will no longer disconnect automatically on failed
   pings; users have to listen for the event and handle it
   themselves;

 - the parser will no longer attempt to automatically use alt
   nicknames or create new nicknames on connection; users have to
   listen for the event and implement the logic themselves

Both of these were really weird anyway, as adding a listener (even
for debugging purposes) disabled the built-in behaviour.

Change-Id: I1d81392650d8193503621b2e69fbe66cd0eb736a
Reviewed-on: http://gerrit.dmdirc.com/4058
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I3ed34a6e2dc899c24ba39b198b748be7c0f1812c
Reviewed-on: http://gerrit.dmdirc.com/3951
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Iad5e74e45bb052f65b761ce8e334b571838edc10
Reviewed-on: http://gerrit.dmdirc.com/2978
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: If8c377f64b3b336203ab4d01aaaa0a731f0545a1
Reviewed-on: http://gerrit.dmdirc.com/2885
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I1c711ca0525af9a78cbd7c07876eaf6cc91c1434
Reviewed-on: http://gerrit.dmdirc.com/2604
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Ie7236e561d04eed00576a8ff6b43228106d3bff5
Reviewed-on: http://gerrit.dmdirc.com/2288
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I4a4bd2f45c18759bced41fc0aec1e570f11dfa6f
Reviewed-on: http://gerrit.dmdirc.com/2073
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I4a6c51789e37e0f96967344c98010ee7ff760506
Reviewed-on: http://gerrit.dmdirc.com/1723
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

Change-Id: Ifd55c3c04740aa88f349aae5abee7fa817b82e39
Reviewed-on: http://gerrit.dmdirc.com/1692
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I8cf58d5fc06911eaf1fa35ee9b81abb5206dd70e
Reviewed-on: http://gerrit.dmdirc.com/1343
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I920ca1847ac1af6cf3a13e891e6340f68c6abb91
Reviewed-on: http://gerrit.dmdirc.com/1335
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

Change-Id: I51d0e3c7975740b1ede5d6226639022bd15a482a
Reviewed-on: http://gerrit.dmdirc.com/1328
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

Change-Id: I02624534372366bda5ad9ebc19d2cedbc774449d
Reviewed-on: http://gerrit.dmdirc.com/1324
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I4a52807921e2c3082cd0650e222387f0dedbfd23
Reviewed-on: http://gerrit.dmdirc.com/1319
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

Change-Id: I581861c8c8743cb835c45d128c4b4768372de807
Reviewed-on: http://gerrit.dmdirc.com/201
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>
Tested-by: Shane Mc Cormack <shane@dmdirc.com>