Auto merge of #147 - servo:majorbump, r=nox

Major version bump

To accommodate the revert of 1887503 per #140 (comment).

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Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "servo-glutin"
-version = "0.14.3"
+version = "0.15.0"
 authors = ["The glutin contributors, Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform OpenGL context provider."
 keywords = ["windowing", "opengl"]