Release 3.5.4

* Hide signatures from frosh and sort by name by default (#283)

* Correct counting of upper sigs (#255)
* Make the report button readable (#286)

* Automate deployment of new releases (#254)
* Add simple readiness check (#256)
* Type hinting and mypy (#257)
* Various package upgrades (thanks dependabot!)
  * Subsequent pylint fixes (#285)
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