Tardy 1.0.0
Install
Download Tardy-1.0.0.dmg below, open it, and drag Tardy to Applications.
It is signed with a Developer ID and notarized by Apple, and it updates itself
from then on. Tardy watches the calendars in the Mac Calendar app, so add your
accounts there first.
Verify
spctl --assess --type open --context context:primary-signature -vv Tardy-1.0.0.dmg
shasum -a 256 Tardy-1.0.0.dmg
# c2943c2192175da3c807ef85570b8e2e533081ba5f7c06976c1b727318b68fdc