Range Picker for start date OR end date (optional range)

[dilonhenrique]

First of all: thanks for this great lib! Pretty good experience so far.

In my use case, we have this task where user can define one or both start and end date. Meaning the end date is optional.
With the current lib, I could only use range with both values.

Is there a way to do so? If not, would this make sense as a future feature?