Update copyright year
Reverse the order of entries in changelog
Relax Cabal bounds on hashable
Change player names so that the first word alone makes sense too
Rename the Path feature to Trail
Stop officially supporting GHC 7.4.2
Add the drone.io status badge
Depend on the vector packages now that the engine code depends on it
Test compilation from hackage on drone.io, not on travis
Rename content validation functions
Change items content to use ItemFeature
Switch to the new format of accessibility rules
Update TileKind content according to engine changes
Add an extra line to main menu
Update Makefile (add difficulty and shorten medium tests)
Update gameplay documentation
Update config files