Upgrade to latest gfx
Merge pull request #60 from bvssvni/master

Upgrade to latest gfx
Upgraded to latest Piston
Merge pull request #61 from bvssvni/master

Upgraded to latest Piston
Handle resize event
Merge pull request #62 from bvssvni/master

Handle resize event
Handle focus event
Merge pull request #63 from bvssvni/master

Handle focus event