new section: Legal basis See merge request !105
tweak security section See merge request !103
restructure "privacy" section to "pseudonyms" See merge request !104
"Cleanup" wording See merge request !102
Update docs to 0.72 See merge request !101
castellum!2223
adapt to castellum 0.70 See merge request !100
no longer true since castellum!2183
no longer true since castellum!2135
update warning on appointment validation See merge request !99
give more information on searching for double names See merge request !98