commits: 022cdd97a9ddab1a152e23e1e1c42e78c1ed0fa9

This data as json

sha	message	author_date	committer_date	raw_author	raw_committer	repo	author	committer
022cdd97a9ddab1a152e23e1e1c42e78c1ed0fa9	Much, much faster extract() implementation Takes my test down from ten minutes to four seconds! * Removed unnecessary update() optimization * Added column_order= to .transform() and .transform_sql() * Tests for reusing lookup table in extract() Closes #172	2020-09-24T15:43:55Z	2020-09-24T15:43:55Z	13ae486343ea6454a93114c6f558ffea2f2c6874	cd792325681cbad9f663f2879d8b69f1edbb678f	140912432	9599	19864447