PKG: MSVC build fixes by Christoph Gohlke.
Add note about proper use of Py_ssize_t
Globally change np to cnp if cimported
Fix accidentially changed doc strings
Docstring circle + ellipse
Use log(2) instead of log10(2)
Use log(2) instead of log10(2)
Merge pull request #436 from sciunto/docstring

Docstring circle + ellipse
Merge pull request #435 from ahojnnes/cnp

RF: Globally change np to cnp if cimported.
Merge pull request #434 from ahojnnes/ssize_t-note

DOC: Add note about proper use of Py_ssize_t.
PKG: MSVC build fixes by Christoph Gohlke.
Merge remote-tracking branch 'cgohlke/patch-2' into msvc_build_fix

Conflicts:
	skimage/filter/rank/_crank16.pyx
	skimage/filter/rank/_crank8.pyx
Merge pull request #417 from stefanv/msvc_build_fix

PKG: MSVC build fixes by Christoph Gohlke.