v1.18

This release adds two new features:

1. Support for the Paper Buttons Row card! This card allows you to add buttons to the side of the timer, so you have even more flexibility with your dashboard layout. Check the README for an example.
2. Support for state through attributes. In the rare cases where you have an entity whose state is inaccurate but has a descriptive attribute representing its state, you can use that attribute to compute active_state, pause_state, etc. See the new state_attribute option.