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This is the day after 'Sinterklaasavond' :gift: edition of pykechain.
* Update the `Client.create_widgets` (bulk create widgets) and `Client.update_widgets_associations` (bulk update widget associations) to work seamlessly with the backend on it as we discovered a bug in the backend during tests of these methods. Additional tests where added as well. 617, 626
* Added `SideBarManager` and `SideBarButton` classes to support configuration of the scope side-bar. 539
* Added Enumeration classes `KEChainPages`, `SubprocessDisplayMode`, `URITarget` and `FontAwesomeMode` to support configuration of the scope side-bar. 539
* Added `is_url` url checker, with a tap to the :tophat: for Konsta Vesterinen and his implementation of an URL validator. 539
* Added pre commit hooks for developers. Use `pre-commit install` to install the hooks in your local repo and while committing, watch your git console (in Pycharm in the 'Version Control' tab (bottom) > 'Console' tab). If you want to run the pre-commit hooks on all files (not only those ones that changes in the commit) run `pre-commit run -a` on the command line (Terminal).