Merge develop branch to master

[alvaro-canepa]

There are 2 commits on develop branch that can be merged to master.
One of them solve issue SQLSTATE[42S02]: Base table or view not found: 1146 Table '{db}.user_groups' doesn't exist (SQL: select count(*) as aggregate from user_groups where code = guest) installing from cli.

[lautsevich]

We'll make a release soon.