Fixed glfwCreateWindow return value semantics.
Added pointer swap macro for callback setters.
Replaced selector test with NSAppKitVersionNumber.
Simplified source file comment headers.
Updated change log.
Fixed window position being incorrect on some WMs.
Added clearing of callbacks on terminate.
Fixed original video mode being overwritten.
Removed cursor centering XFlush hack.
Formatting.
Expanded section on X11 and Mesa packages.
Build documentation improvements.
Build documentation improvements.
Build documentation improvements.
Added NvOptimusEnablement.
Fixed keypad 5 release events.