Updated deps/sax-rs and deps/glfw-rs
Merge pull request #68 from ozkriff/master

Updated deps/sax-rs and deps/glfw-rs
Changed to_string to to_str and removed unnecessary instances.
Merge pull request #69 from mitchmindtree/master

Changed to_string to to_str and removed unnecessary instances
Don't update submodules on build
Update to latest rust nightly
Allow non_snake_case_functions in function loader
Merge pull request #71 from bjz/update

Update to latest rust nightly