update to ChangeLog (#637)
update to ChangeLog (#637)

* added new customization 'dayPropGetter'

* updated according to comments on pull request

* moved custom dayPropGetter to 'rendering' demo

* updated ChangeLog in preparation for version 0.17.1

* completed merge

* added link to pull request

* fixed link to pull request

intljusticemission/react-big-calendar,jquense/react-big-calendar,jquense/react-big-calendar,TeaBough/react-big-calendar,jquense/react-big-calendar