Increase warning level in appveyor builds (could also use "/Wall", but let's see how spammy /W4 is).
Increase warning level in appveyor builds (could also use "/Wall", but let's see how spammy /W4 is).

da-woods/cython,cython/cython,scoder/cython,scoder/cython,cython/cython,cython/cython,cython/cython,scoder/cython,da-woods/cython,da-woods/cython,scoder/cython,da-woods/cython