* Revert "changes to clusteR"
This reverts commit 33ee1b71e4bc8435fb315762a871f8c4cb6c5f80.
* New module Flexcache
* update documentation string, and copyright date
* fix issues
* Revert "Revert "changes to clusteR""
This reverts commit 4dab6f7607223037ab18e75a3247747f74ffbc8b.