Windows problem loading Numba

[danmaclean]

  File "C:\Users\griff\.conda\envs\redpatch_2020.04.23\lib\site-packages\numba\core\typeconv\typeconv.py", line 4, in <module>
    from numba.core.typeconv import _typeconv
ImportError: DLL load failed: The specified module could not be found.```

[danmaclean]

Looks like a problem specific to this version of numba

https://stackoverflow.com/questions/61371313/why-am-i-getting-a-dll-error-when-importing-numba-in-python-3-8

apply a version restriction in the install.