fixed bad signature in docstring for uniform()
BUG: Fix lack of NULL check in array_richcompare.

The lack of this check led to a segfault.

Closes #4613.
Merge pull request #4611 from gdementen/patch-1

fixed bad signature in docstring for uniform()
Merge pull request #4614 from charris/fix-gh-4613

BUG: Fix lack of NULL check in array_richcompare.
Revert line from #4585 to get mask, data shapes to match in .flat
Merge pull request #4615 from mhvk/ma/matrix-flat-redo-shape

Revert line from #4585 to get mask, data shapes to match in .flat