bump to v2.1.0

bump to v2.0.2

bump to v2.0.1

v2.0.0 has been unpublished

Update approx requirement from 0.3.2 to 0.4.0

Updates the requirements on [approx](https://github.com/brendanzab/approx) to permit the latest version.
- [Release notes](https://github.com/brendanzab/approx/releases)
- [Commits](https://github.com/brendanzab/approx/commits)

Signed-off-by: dependabot[bot] <support@github.com>

bump to v1.3.1

bump to v1.3

bump to v1.2.4

release v1.2.3 (#100)

Release v1.2.2 (#97)

Release v1.2.1 (#96)