Fernando Herrera 02b2c55146
Rolling and cumulative commands (#3960)
* rolling and cumulative operations

* update polars to 0.15.1

* change reference in function
2021-08-24 09:10:29 -05:00
..
2021-08-14 23:36:08 -05:00
2021-07-25 22:01:54 +12:00
2021-08-24 09:10:29 -05:00