DEVELOPMENT ENVIRONMENT

~liljamo/felu

ref: a3ddc93bdf4330285e00d0a1fc10af5c3801f1a4 felu/internal/util d---------
feat: genTsigKey and refresh tsig key
feat: chars -> charsAPIKey
chore: implement changes from linters, update copyright years
fix: check A record in update api, move check to func
feat: api endpoint to update a record