As explained in the note included in the diff, this can lead to
dramatically better query plans, and it seems to be especially important
for versions of Postgres <12.
We mostly want to do this to make queries against information_schema
tables work, which the console cares about. information_schema tables
use types like sql_identifier, which have no corresponding array types
defined! Therefore, in order to generate valid queries for _in and _nin
conditions, we need to treat them as their base types, instead.
* Separate DB and metadata migrations
* Refactor Migrate.hs to generate list of migrations at compile-time
* Replace ginger with shakespeare to improve performance
* Improve migration log messages
