Update project status

Author: DSchroer

README.md

@@ -89,10 +89,10 @@ For more information check out [MDN SharedArrayBuffer](https://developer.mozilla
 - [ ] tests exist
 
 ## Future work
-- [ ] Fix NULLGL in OpenSCAD 2021
+- [x] Fix NULLGL in OpenSCAD 2021
 - [ ] Merge WASM patch into Boost.Filesystem
 
 ## Known Issues
 - [ ] text does not render
     Fonts appear to be missing but FontConfig seems to be working correctly. This seems to just be a config issue at runtime.
-- [ ] CGAL error on intersection between cube and circle (might be a 2019 issue)
+- [ ] CGAL error on intersection between cube and circle (csg test)