Fixed incorrect error types. Added missing error string prefixes.
Removed some invalid or superfluous error emissions. Clarified some
error strings. Joined error string lines to aid grep. Replaced some
generic error strings with specific ones. Documentation work.
Fixes#450.
Changed set_type --> set_state.
Give more info back when an error happens with a connection/surface.
Small var name change size --> mirPixelFormats.
Fixes#412.
Changed the window states (focused, iconified and visible) to query the
system directly.
THIS IS A BREAKING CHANGE, although a fairly obscure one. It affects
applications that both care about telling actual key events from
synthetic ones, and are implemented in a non-self-synchronizing way, and
that poll the GLFW_FOCUSED window attribute instead of using the window
focus callback.
If you maintain one of these, please feel free to drop me an email and
I'll help any way I can to transition your application to 3.1.
Fixes#189.
Fixes#204.
