Still need a spacial indexing method to prevent redundant enqueues to the drawlist (esp for text)
I'm in the process of trying to see if I can keep getting vefontcache even more performant... Making it multi-threaded can help but there might be some single-thread per still possible..
* Added clear_atlas_region_caches & clear_shape_cache to VEFontCache (Used on hot-reload by the pototype's font provider)
* Made glyph_draw's over_sample a vec2 for initialization (incase user wants to do some float value multiple of 4x4)
* ADVANCE_SNAP_SMALLFONT_SIZE made a runtime option: Shaper_Context.adv_snap_small_font_threshold
* Large imporvement to text hinting and general rendering of text
