use egl due to vsync not working with glx

add windows feature

Merge pull request glium#2130 from est31/release_0_36_0

Release 0.36.0

use winit rwh_06 feature

no default features

Merge pull request glium#2082 from est31/master

Release 0.33.0

Merge pull request glium#2019 from est31/master

Fix a bug in duplicate location checking

Merge pull request glium#2018 from est31/master

Update glutin to 0.29 and Release 0.32.0

Merge pull request glium#1976 from est31/release_0_31

Release 0.31.0

Merge pull request glium#1959 from est31/release_0_30

Release 0.30.2