[Automatic Releases] Automatic version tags for the weekly release

[AsherGlick]

Once we have created a weekly build process in #334 we should update the system that automatically tags releases

The new release tag should be identified by searching for highest commit tag with the format:

/alpha-(?P<major>[0-9]+)\.(?P<minor>[0-9]+)\.(?P<revision>[0-9]+)/

and then setting the release tag to be alpha-{major}.{minor+1}.0

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After #333 is completed we will change this logic to be

/release-(?P<major>[0-9]+)\.(?P<minor>[0-9]+)\.(?P<revision>[0-9]+)/

and the tag will be release-{major}.{minor+1}.0
so the words alpha and release should be an easily editable variable if possible.