Removed code and dependencies related to the VSGUI project.
Until Project has solid plans and an implementation plan this will be no longer supported by the plugin.
Updated Bukkit dependency to 1.7.9-R0.2.
Fixed memory leak occuring because Player objects were never released.
SniperManager is now handling session persistence over UUIDs instead.
Sniper is now only carrying UUID and querries the correct Player object at runtime (this should be optimized later on). Because of this unit test for such behaviour was removed. Fixes #248.
Upped version to 5.170.0-SNAPSHOT.
Merge branch 'release/5.170.0-SNAPSHOT' into dev