* Exposed version parsing from version checker
* Ability to upgrade mixnode from 0.8.X to 0.9.0
* Ability to upgrade gateway from 0.8.X to 0.9.0
* Ability to upgrade native client from 0.8.X to 0.9.0
* Ability to upgrade socks5 client from 0.8.X to 0.9.0
* Typo
* Minor renaming
* Preventing upgrade if current is not a release version
* Additional upgrade restrictions
* Corrected version bound