Added gamepadreleased to all_callbacks
Merge pull request #29 from Bradshaw/master

Added gamepadreleased to all_callbacks
Update signal.lua

register does not return function handle
Merge pull request #30 from headchant/patch-1

Update signal.lua
ln 179 & 181: second self.y changed to self.x

For vector:angleTo()
Update vector.lua

Changed vector:trim_inplace so it actually trims the vector when it is longer than the maxLen
Merge pull request #31 from mifuyne/master

ln 179 & 181: second self.y changed to self.x
Merge pull request #32 from stfan/patch-1

Fix vector:trim_inplace()
Fix vector-light.trim() (see 2abe666ce9)
Merge branch 'master' of https://github.com/vrld/hump