Tag releases

[AndreMiras]

There are a couple of release that were made silently. These releases need to be tagged on git so people can easily reference to it when installing the package.
You can tag on a previous commit, e.g.:

git tag -a 0.7.0 1901a47 -m "0.7.0"
git tag -a 0.8.0 3c68b57 -m "0.8.0"
git push --tags

That way people can just:

pip install https://github.com/corpetty/py-etherscan-api/archive/0.8.0.zip

[corpetty]

yeah my release process is garbage.. thanks, i'll get to this.