0.002   2018-05-10 (PERLANCAR)

	- [Bugfix] Fix SQL that caused us to always query from remote
	  source.

	- Update DB schema: rename column currency1 -> from_currency,
	  currency2 -> to_currency.

	- [test] Use MySQL for schema migration test because SQLite doesn't
	  support column renames/changes.


0.001   2018-05-09 (PERLANCAR)

        - First release.