Jeremy Wall 59343d71d5 FEATURE: add a conatins operator
Adds the `in` operator that checks for fields in tuples and
elements in a list.

Fixes: #12
2019-01-03 11:42:11 -06:00
..
2018-11-23 12:51:13 -06:00
2019-01-03 11:42:11 -06:00