Build fails on Windows due to missing m.lib #11
Description
I tried to install pyknotid from PyPi using pip on Windows 11 and the build failed for two reasons. The first is that planarity would not build for the reason that I reported at hagberg/planarity#15. After fixing that, the pyknotid build failed at the linking stage with message LINK : fatal error LNK1181: cannot open input file 'm.lib'. Various internet sources suggested that m.lib is no longer needed so I cloned the repository and changed libraries=["m"] to libraries=[] in four places in setup.py; then I was able to build successfully. I do not know whether that is a satisfactory fix on other platforms.