Prediction hangs in Python 3.8

[jack89roberts]

airsenal_run_prediction never seems to start in a Python 3.8 environment, possibly something to do with multiprocessing or pystan behind the scenes. This was on the feature/genetic-algorithm branch, so might be specific to that (if so maybe some conflict caused by PyGMO).

[RajeshTailor1]

Just an FYI - I am running Ubuntu VM on AWS with Python 3.8 and the prediction worked fine I am currently running the optimizations will confirm once that has finished.

Also I am running it outside of Conda (due to the sqlite database errors).

[RajeshTailor1]

Just to let you know it finished running approx 2hrs on the Ubuntu VM (2 cores 4gb ram) had zero database errors during the optimisation and predictions. This is running outside of Conda.