v2.4.1: Hotfix/#43 fix css nano config (#95)

* Display clear button only when dates are set, include displayClearButton prop`

* #43 fix css nano config to avoid altering z-index

v2.3.0

include closeDatepickerOnClickOutside prop to allow usage of open/hid…

v2.2.9

version bump

v2.2.8

version bump