Segfault/performance fixes.
Performance optimizations: Concurrency, & move download/styling/layout to out-of-thread.
Draft integration test against Stylist & HURL, shelve due to incomplete Text v2 transition.
Upgrade underlying Balkon.
Now I'm having trouble with GLUT in test program, switch back to SDL2 this time without GL.
Refactor tree to aid future dev (Inline layout got a major overhaul anyways...)
Refactor to use newer Balkón APIs.
Add support for logical properties thanks to Stylist Traits update.
Build utility for parsing CSS3 Grid templates.
Refactor grid layout code to deduplicate logic along each axis.
Rename Graphics.Layout.CSS.Internal to Length
Seperate out Font API from internals.
Expose utility to inform atlas construction.
Finish implementing preprocessing/CSS parsing & integrating everything with test script.
Draft grid preprocessor which sucessfully compiles.
Parse CSS4 Grid properties.
Parse CSS Box model CSS properties, dispatch others to FontConfig & injected dependency.
Unittest basic grid sizing.
Draft new CatTrap API which hopefully is easier to implement.