Prefix names of private blur functions
Break get_quality into two functions to avoid pointers
Manual text changes
make openmp flags universal for gcc, icc, and clang

clang: http://clang-omp.github.io/
Increase precision of Voronoi iteration

Fixes #80
increase gcc x86_32 sse performance by 20%

clang and icc use sse fp math automatically, so this switch has no effect. gcc
check is necessary because clang only recognises it as of 3.4 and throws an
error in earlier versions. icc ignores it.
Merge commit 'baff45b1ddc215d5965a8c759129d58daf41713d'
Comment reminding that NDEBUG does more than the info message
Version bump
Docs update
Docs update
sync icc to clang results
Revert "sync icc to clang results"

This reverts commit 5dae947ee749c88530f334cf1f9b50f2a79934a5.
minor comment change per commit f386a31
Fixed version in the Makefile
Tweak "good enough" color weight
Rebuild on change of .h
Unnecessary +
Properly immutable liq_attr during quantization
Const in getters