Also change the way we handle columns rename migration.
SQLite restrict column addition not to have PRIMARY KEY and/or
UNIQUE attribute, so we have to change from:
add new column -> migrate data from old column to new column ->
rename old table -> create new table with old columns removed ->
migrate data from old table to the new table -> drop old table
to directly:
rename old table -> create new table with renamed columns ->
migrate data from old table to the new table -> drop old table
8ce87f0d2c