Dev/0.18.2

Trying a new branching development strategy. Previously after a release I would create a dev branch and bump the version number, but the version number on the main branch would be equal to the one that was just released. This causes problems for any new MR that branches off of main, because the CI will test it as if it is the released version, and the branched version will conflict with what is on pypi.

New strategy is to add the version bump commit directly to main, and then start a dev branch that has no changes on it. This should improve CHANGELOG management.