Add the unique() example to test_sets
Add the unique() example to test_sets

cpcloud/numba,stefanseefeld/numba,stonebig/numba,stonebig/numba,seibert/numba,stonebig/numba,gmarkall/numba,numba/numba,cpcloud/numba,jriehl/numba,stefanseefeld/numba,stefanseefeld/numba,numba/numba,IntelLabs/numba,sklam/numba,cpcloud/numba,IntelLabs/numba,sklam/numba,cpcloud/numba,numba/numba,stefanseefeld/numba,IntelLabs/numba,stuartarchibald/numba,jriehl/numba,sklam/numba,stonebig/numba,jriehl/numba,IntelLabs/numba,stuartarchibald/numba,seibert/numba,stuartarchibald/numba,numba/numba,jriehl/numba,jriehl/numba,seibert/numba,IntelLabs/numba,sklam/numba,stonebig/numba,seibert/numba,stuartarchibald/numba,stefanseefeld/numba,seibert/numba,gmarkall/numba,sklam/numba,stuartarchibald/numba,gmarkall/numba,gmarkall/numba,numba/numba,gmarkall/numba,cpcloud/numba