Use main_engine() in alembic env setup.
Use main_engine() in alembic env setup.

We enforce a few valuable options such as strict mode and the charset
with it, which are valuable to set during migrations as well.

Eagles2F/sync-engine,PriviPK/privipk-sync-engine,wakermahmud/sync-engine,EthanBlackburn/sync-engine,gale320/sync-engine,gale320/sync-engine,ErinCall/sync-engine,PriviPK/privipk-sync-engine,PriviPK/privipk-sync-engine,EthanBlackburn/sync-engine,ErinCall/sync-engine,Eagles2F/sync-engine,Eagles2F/sync-engine,ErinCall/sync-engine,nylas/sync-engine,ErinCall/sync-engine,gale320/sync-engine,closeio/nylas,wakermahmud/sync-engine,wakermahmud/sync-engine,jobscore/sync-engine,jobscore/sync-engine,EthanBlackburn/sync-engine,PriviPK/privipk-sync-engine,closeio/nylas,wakermahmud/sync-engine,closeio/nylas,jobscore/sync-engine,gale320/sync-engine,gale320/sync-engine,EthanBlackburn/sync-engine,closeio/nylas,nylas/sync-engine,Eagles2F/sync-engine,nylas/sync-engine,EthanBlackburn/sync-engine,ErinCall/sync-engine,wakermahmud/sync-engine,Eagles2F/sync-engine,PriviPK/privipk-sync-engine,jobscore/sync-engine,nylas/sync-engine