Add copyright notice to step.py module
Add copyright notice to step.py module

gmarkall/numba,pitrou/numba,pitrou/numba,pombredanne/numba,pombredanne/numba,seibert/numba,pombredanne/numba,pitrou/numba,stefanseefeld/numba,stuartarchibald/numba,GaZ3ll3/numba,numba/numba,numba/numba,IntelLabs/numba,stefanseefeld/numba,jriehl/numba,seibert/numba,sklam/numba,cpcloud/numba,GaZ3ll3/numba,stefanseefeld/numba,cpcloud/numba,gmarkall/numba,stonebig/numba,gdementen/numba,gdementen/numba,GaZ3ll3/numba,GaZ3ll3/numba,sklam/numba,seibert/numba,stefanseefeld/numba,pitrou/numba,ssarangi/numba,IntelLabs/numba,jriehl/numba,GaZ3ll3/numba,stuartarchibald/numba,sklam/numba,gmarkall/numba,ssarangi/numba,IntelLabs/numba,gdementen/numba,stonebig/numba,IntelLabs/numba,stuartarchibald/numba,pombredanne/numba,stonebig/numba,sklam/numba,gdementen/numba,cpcloud/numba,cpcloud/numba,gdementen/numba,numba/numba,jriehl/numba,stonebig/numba,gmarkall/numba,stuartarchibald/numba,numba/numba,numba/numba,ssarangi/numba,IntelLabs/numba,pombredanne/numba,stonebig/numba,cpcloud/numba,stuartarchibald/numba,gmarkall/numba,stefanseefeld/numba,ssarangi/numba,sklam/numba,pitrou/numba,ssarangi/numba,seibert/numba,seibert/numba,jriehl/numba,jriehl/numba