chore: release 0.2.2

[github-actions[bot]]

:robot: I have created a release *beep* *boop*

0.2.2 (2021-10-27)

Bug Fixes

• add missing primer-orientation keywords (41a84e6)
• exit cleanly when primers aren't found (#11) (e927591)
• Exit cleanly with empty input (#12) (35aae65)

Documentation

• update user-guide to include newly added flag (4d28ac1)

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[github-actions[bot]]

:robot: Release is at https://github.com/RIVM-bioinformatics/AmpliGone/releases/tag/v0.2.2 :sunflower: