Fixed - Fix deprecation of `pandas.np`, h/t simon-smart88. ([9](https://github.com/jsvine/weightedcalcs/issues/9)) - Fix deprecation of `DataFrameGroupBy.apply operated on the grouping columns`.
Changed - Change minimum `pandas` version to `2.0`.
0.1.2
Fixed - Fix incompatibility with pandas 0.20.1
0.1.1
Added - MANIFEST.in
0.1.0
Added - Support for Python 2.7 - Support for non-pandas input - Full test coverage