Fix rust-ci doc uploading
Merge pull request #126 from bjz/rust-ci

Fix rust-ci doc uploading
Merge pull request #120 from cmr/doc-everything

Add lots of docs
Clean up shader source handling
Merge pull request #127 from bjz/shader-source

Clean up shader source handling
Add ShaderParam impl for ()

Lets you omit shader parameters when you don't want them.
Align triangle example with blog post
Merge pull request #128 from cmr/master

Align triangle example with blog
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