Replace DateTime.now().getOnlyDate() with DateTime.today() when possible
Add clearing for range
Add clear for single date calendar
Show clear button only if range is set
Add hasSelection to DateRange
Test clearing calendar
Add allowClearDates to playground
Use clearLabel instead of clear to avoid confusion with css clear
Update playground
Build for version 4.3.0
Merge pull request #66 from gnizhak/master

Support for clearing calendar dates or range