1.8.8
* Small tweaks to the habit scheduling algorithm
* Fix some crashes
1.8:
* New bar chart showing number of repetitions performed each week, month or year
* Performing habits on irregular weekdays will no longer break your streak
* More colors to choose from (now 20 in total)
* Customize how transparent the widgets are
* Customize the first day of the week
* Yes/No buttons on notifications
* Automatic dark theme (Android 10)
* Smaller APK and backup files