Helping test Numba 0.53.0 RC

[sklam]

RC3 is available now:

Numba 0.53.0 and llvmlite 0.36.0 Release Candidates

Numba 0.53.0rc3 has been released. Conda and Pip packages are in the usual places. The RC3 fixes the gufunc regression reported in Regression in 0.53rc2: axis= parameter in gufuncs · Issue #6773 · numba/numba · GitHub. If no new regression is reported, we will plan to release the final version a week from now.