1.0.0:
    - Initialize plugin.
    - Prepare for October marketplace.
1.0.1:
    - Compatibility with October CMS 2
1.0.2:
    - Fix missing checkboxes at the calendar selector in the backend
1.1.0:
    - Update scopes for Calendar API to read only.
    - Fix bug about missing refresh token after the update to the latest google clientapi version
    - Remove unnecessary logging