v2.3.1

Release fix for npm 🤦‍♂️

Nothing to see here! This release only fixes the package.json version. The new version can now be installed with npm as expected.

Changed

• The documentation was slightly improved. (b5d5b27)

Fixed

• I messed up the v2.3.0 release by forgetting to update the package.json version field. Fixes #130. (df88fe4)