Fix for np.int indexing of tables failing on py 3.x
Regression test for failing py 3.x np.int access of tables
Add changelog entry

[ci skip]
Change np.int_ to np.integer

np.integer is the base class of all integer types, including uints
Typo fix in change log

[ci skip]
Merge pull request #2477 from eteq/fix-py33-np-integer

Fix numpy integer table access in py 3.x