* First version of URL builder (#3)
* Updated API docs
* Added option for default notification service (#56)
* Added support for args in URL Builder (#3)
* Added regex checks in URL builder (#3)
* Added test button when adding notification service
* Updated API docs
* Added recurring reminders on week days (#55)
* Updated API docs
Some of the waitress code has been overwritten to make this work (at `backend.db.ThreadedTaskDispatcher`). The `handler_thread` function has been changed so that when the thread shuts down, the database connection for the thread is also closed (this _has_ to happen _in the thread that the connection is for/from_). The `shutdown` function opens and closes a database connection at the end, which triggers the checkpoint of the journal, writing everything to the db file and removing the `-wal` and `-shm` temporary db files.