Add possibility to disable roll to prev/next month if outside day is clicked

[smesgr]

Some of my users have difficulties to understand the outside click feature.
If only one month is visible it seems to be ok, but if more then one month is rendered they find it confusing.

Thus I would like to disable this feature.
With new property name I'm unhappy, but can't come up with a more precise phrase.

[codecov]

Codecov Report

Merging #585 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #585   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          15     15           
  Lines         609    609           
  Branches      129    129           
=====================================
  Hits          609    609

Impacted Files	Coverage Δ
src/DayPicker.js	100% <100%> (ø)	⬆️

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[gpbl]

Thanks for you contribution! Yep we could call that prop enableOutsideDaysClick.

[smesgr]

yeah your suggestion sounds better then mine. 👍

[ebrillhart]

@gpbl Chiming in to say I'd love to have this merged - have a project where we'd like users to be able to see/select full weeks even if they fall between months, but don't want the month to change on click. Is there a timeline for merging and releasing this functionality? Happy to chip in with some help if that would hasten it along!

[gpbl]

Published as v7.1.0.