Merge branch '121-add-db-change-note' into 'master'

Add note for page-sized DB size change

Closes #121

See merge request !155



Merged-by: Leonardo da Rosa <ldarosa@gitlab.com>
Approved-by: Leonardo da Rosa <ldarosa@gitlab.com>
Reviewed-by: Leonardo da Rosa <ldarosa@gitlab.com>
Co-authored-by: Jon Jenkins <jjenkins@gitlab.com>