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.

(0) -30 -10 -7 +7 +10 +30 +100 tip

mercurial