Sprinkle more const in the shaders
Implement correct animation timing
Add glyphy_arc_accumulator_close_path()
Fix reversing contours

We should not reverse GLYPHY_INFINITY, otherwise that would become
-inf and != inf anymore!

Also fix for empty contours.
Update README

Updated readme to display a little more information when viewing the repo on github
Demo reads text from file

Made the demo read from an editable txt file instead of jabberwocky.h