Calendar Widget

Invalid date

* Add "Events that ended recently" option allowing to show events, which ended several hours ago, today or yesterday
* Added option to show all past events having default color
* Add option to hide events based on keywords in a title
* Add "today" option to a "Date range", so you can see current and future events
* Add "Refresh" button to the widget header
* Add show days without events option

Also see: https://github.com/plusonelabs/calendar-widget/releases/tag/v1.9