Use Github/Gitlab releases to distribute gettor binaries
Right now GetTor attempts to delete the previous git release branch and upload a new one due to [limits on repository sizes](https://help.github.com/en/github/managing-large-files/what-is-my-disk-quota#file-and-repository-size-limitations).
Perhaps a better way to handle this would be to set up [Github releases](https://help.github.com/en/github/administering-a-repository/about-releases). This can be done through the [REST API](https://developer.github.com/v3/repos/releases/).
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