Basic script to create sqlite3 schema
Don't version the sqlite db
Add more bridge tables. Do insert on addEvent. Ensure schema exists.
Read data from file, enforce foreign keys, DB transaction
Initial simplification: remove many-many relationships

Currently I'd rather deal with the duplicate data than manage that
extra complexity.  Locations and people will be searchable, but will be
duplicated for each event.
Insert people and locations
Add getAllEvents db query. Add tk frontend. Rename files.
Return the count of rows inserted on import
Add filepath entry box
Make listbox resize with window
Update events list on import (hack with upvar)
Remove unneeded comments
Add namespaces ::events and ::eventsDb
Make Enter key submit the import file
Fix dates in sample data, more specific events query, code format
Initial work on getting data from the listitem selected