Reworked web front, problems are now sorted by category as well as line number

Fix math domain errors in vector_angle

added test for collinearity, fixed bowtie test

added a simple web frontend

Added bowtie check

Changed threshold skew test, added warning for slightly skew quads

Added command line option to list all checks.

added check for invalid colours

added test for forbidden primitive scaling

added matrix all zero test

refactor

refactor

(0) -12 +12 +100 tip

mercurial