Fix for Python 3.7+
Fix for Python 3.7+

Types of typing generics change.

numba/numba,IntelLabs/numba,seibert/numba,stonebig/numba,cpcloud/numba,IntelLabs/numba,IntelLabs/numba,stuartarchibald/numba,seibert/numba,stonebig/numba,stuartarchibald/numba,numba/numba,gmarkall/numba,stuartarchibald/numba,stonebig/numba,stonebig/numba,gmarkall/numba,gmarkall/numba,numba/numba,seibert/numba,numba/numba,stuartarchibald/numba,cpcloud/numba,numba/numba,seibert/numba,seibert/numba,stuartarchibald/numba,IntelLabs/numba,cpcloud/numba,cpcloud/numba,gmarkall/numba,stonebig/numba,gmarkall/numba,IntelLabs/numba,cpcloud/numba