Quentin Harscoët 27a8678f88
added getNumCardsReviewedByDay action (#239)
* added getNumCardsReviewedByDay action

* added sample in statistics.md

* fix bad quotes and add basic test
2021-03-06 09:58:40 -08:00
..
2020-01-05 16:24:20 -08:00
2021-02-22 19:25:12 -08:00