Pl-compare

- Simplified bools, summary and sample method names.
- Enabled doctests.
- Added percentages to the value summary dataframe.
- Changed id_columns to be join_columns.

**Full Changelog**: https://github.com/concur1/pl_compare/compare/v0.1.21...v0.1.22

Updated version.

Updated dev dependencies.

Removed dev dependencies from main dependencies.

Added total value differences to the value differences summary.