Updated tests
Merge branch 'master' of github.com:openscad/openscad
Updated tests
Moved get_fragments_from_r into Calc
removed redundant get_fragments_from_r
Use namespace instead of class method
Updated tests
Added 2D difference tests
Added mixed 2D and 3D object for difference tests
enable disabling of syntax highlighter, add highlighter for dark backgrounds
make math functions easier to see on white background
Merge branch 'master' of github.com:openscad/openscad into colorsfix
Added failing test for issue 541
Merge pull request #580 from openscad/colorsfix

Colorsfix - 3 options for syntax highlighter
attempt to fix broken mingw build due to new GLIB dependency
Merge branch 'master' of github.com:openscad/openscad
Renamed to issue541
Added testcase for #582
Removed obsolete tests
Added testcase for #578