rainphp/rainframework — comment on commit 9751b08c1116ef99d3374cbd6d623afb422f3c38
File: system/library/DB.php line 48
By rainphp:

I just remembered now, that you can connect to different driver with DB::setup( $string, $username, $password ), I'll cherry pick some change from the multiton version, and put back setup as public method:
https://github.com/rainphp/rainframework/blob/20ba62a61a5a943f7e839b3a149ed6ca2a1e1362/library/DB.php

Thank you so much for noticing that!