Fix object constants
Fix type promotion for (array_type, object_)
Allow keyword arguments in typing functions
Add np.bool_ -> minitypes.bool_
Add type inference for calls to arbitrary ufuncs
Fix lowering NULL constants of type object (e.g. dict of keywords to PyObject_Call)
Run travis-ci for all branches
Merge branch 'release' of github.com:numba/numba into devel