Look into adding autoversioning of project #128

Currently, Canada-U.S.-ElecTrade contains a version number in the setup.csv file, 0.0.1. A version number isn't very useful if it's not updated with each version, which isn't something we're doing right now.

It looks like automatically updating "semantic versioning" (0.0.1 -> 0.0.2 ...) is achievable in Git, according to https://stackoverflow.com/questions/37814286/how-to-manage-the-version-number-in-git. Maybe this is something we could look into.