If '\r' appears in an inline <style> element, libhubbub splits the text nodes
there, creating multiple text children. The inline style logic assumed that
each <style> element had only one child.
The logic was moved to trigger when the style element is finished parsing
completely (including the children), and then the children are concatenated
before sending it to the parser.
This code replaces glut with glfw. The motivation here is address the GPU driver bugs on Linux when using multiple `Display *` pointers with shared GL contexts instead of a single common one. GLFW has native access methods which provide access to its `Display *`, which appears to be unique among all the similar toolkits.
Details:
- Adds glfw and glfw-rs to the build
- Removes GLUT code and replaces it with GLFW versions
- Fixes hard coded initial window values
- Fixes clean targets
- Event loop doesn't block on windowing events anymore
script caches last loaded url -- currently no caching policy
naive caching of render layers for near-instant forward/back
handling evicted pipelines is currently broken
