0.000005    2018-04-18
            * More fixes for floating point comparisons.

0.000004    2018-04-17
            * Use the C library for floor and ceil.
            * Improve docs.

0.000003    2018-04-17
            * Fix comparisons in tests to account for floating point rounding
              errors.

0.000002    2018-04-16
            * Update test dependencies.

0.000001    2018-04-16
            * Initial release.