Support python 3.8

[maximusunc]

The application currently doesn't fully support python 3.8. The newer version of python requires newer versions of numpy, sklearn, and scipy, and those in turn break pyinstaller which doesn't support 3.8 yet. (pyinstaller/pyinstaller#4311) Once pyinstaller is updated, we can revisit.

[maximusunc]

This issue (scikit-learn/scikit-learn#15899) might help as well, when attempting to build, the process would complete and we could open the application, but the server would fail to initialize because we were missing a sklearn dll (vcomp140.dll).

[maximusunc]

pyinstaller >= 4.1 now supports python 3.8. Further updates are required to make sure all dependencies are up to date and work with the new python version.

[kennethmorton]

We have now pumped to pyinstaller 4.3 and tested everything with python 3.8. All is well.

[kennethmorton]

We have now pumped to pyinstaller 4.3 and tested everything with python 3.8. All is well.