version number to 0.55-0. Only tagging when sure this runs on all platforms.
change sqrt~ to use library function, not the 1990-vintage table lookup
Merge branch 'doc-updates'
version to 0.55-0test4
Cosine table to have true 0s and 1s at 1/4-way points. Also, computation of cosinesum
Merge branch 'develop'
add fallback M_PI def to d_osc.c - it's apparently missing from Windows
version number to 0.55-0test3