fix for USE case sensitivity
updated mismatch percentage threshold
removed possible stretch for non-orthogonal view and up vectors #335
little typo fix for 3851b264480d8eb20d881c42d7e892d12a4165ae
replaced reference images
Using a single-pass volume rendering approach instead of a multi-pass, this change allows transform operations on volume data in reference to issue #231
Changed license header, as it was before.
May I be considered a contributor?
Add missing "t" in X3DCanvas.js
fix for #340
Added PickingBuffer Mode Tutorial
Removed obsolete tutorial links

Removed two placeholders for tutorials that won't be written since they
do not provide any new information
fix for ccw oriented extrusion vertices
extrusion issue test case
access node fields tutorial
removed large model tutorial links
added tests to regression-suite
fixed mirror example renderedtexture texture coordinates
fixed tutorial links
Deleted outdated bingeo / bitlodgeo / popgeometry test files, annotated popgeometry, annotated popgeometrylevel, removed mirror texture stuff