Updated to latest Rust: ~str -> BufStr
Merge pull request #159 from ozkriff/master

Updated to latest Rust: ~str -> BufStr
Remove workaround for rust bug mozilla/rust#11040.
Merge pull request #160 from bjz/remove-workaround

Remove workaround for rust bug mozilla/rust#11040.
StrBuf->String
Remove trailing whitespace
Merge pull request #161 from bjz/string

StrBuf->String
Fix README example
Merge pull request #162 from bjz/readme

Fix README example
Bring code up to date with Eq changes in Rust

This contains two kinds of changes:
- TotalEq was renamed to Eq, so where TotalEq was derived before, Eq is
  now derived. This required also deriving PartialEq, since it is
  required by Eq and not derived automatically.
- Where Eq was derived before, derived PartialEq in addition to make it
  compile. This is not equivalent to before (since the old Eq is now
  called PartialEq), but I saw no reason to only make the weaker
  equivalence guarantees provided by PartialEq in those cases.
Fix snake case compiler warning

Since the function in question directly mimics an OpenGL function, I
believe disabling the warning is better than renaming the function.
Merge pull request #166 from bjz/hannobraun-cherry-pick

Rust updates
Fixed deprecation warnings.
Merge pull request #167 from leonkunert/master

Fixed deprecation warnings.
Make building work with Mingw

Applied changes by @imbaczek
Improve documentation for `Window` dropping and silence warning
Merge pull request #171 from bjz/docs

Improve documentation for `Window` dropping and silence warning
Use raw-pointer for returning GL proc address
Fix formatting
Update to latest rustc