Log Message:
(devel/R-memoise) Updated 2.0.0 to 2.0.1

# memoise 2.0.1

# Version 2.0.0.9000

* Winston Chang is now the maintainer.

* The default value for the `hash` argument of `memoise()` is now
  taken with an indirection in case `memoise()` is called at the
  top-level of a namespace (r-lib/rlang#1177).

* Fixed a bug in `has_cache()` that caused it to get the value unnecessarily. (#123)