0.3.0-beta - Private Board removal, previous version fixes

Release of beta version 0.3.0.

Initially planned to mark it as 0.2.1 but since I removed Private Boards I marked it 0.3.0 because it's a bigger change.
Private Boards were removed due to low usage and security exploit.
This version aims to fix regressions caused by the previous version (0.2.0).
The full raw changelog can be seen here.

This version does not require any changes if updating from the older version.