Log Message:
(devel/R-fastmap) Updated 1.1.1. to 1.2. 0

fastmap 1.2.0
=============

* Changed `fastmap`'s `$has()` method to use C++ `contains()` method
  (which is new in hopscotch-map 2.3.0). (#30)

* Previously calling `$mset()` with empty input would result in an
  error; now it is a no-op. (#38)