In this thread, it was asked if there was a Date Range Picker somewhere. Couldn't find one. With @Zedna calendar with @maniootek proposal, I felt it could be fun to create one. So here it is. Like always, if you have some suggestions, I am open to any.
* Standardized presentation of month calendar where column 1 is Sunday and column 7 is Saturday.
* Dates selection using Shift-Click inside a single month or between months