This commit contains changes automatically generated by plumedbot on Travis-ci.

Thanks @valsson

(@gtribello noticed this is #423)

Closes #426

provided by @tetsuyamorishita

Closes #422

* restyling for the reweighting c(t) calculation

* fixed bug in multidimensional grid integration

* fixed regtest for 2D reweighting

* changed reweighting keywords and some doc

in the module

@@tetsuyamorishita please fill the module documentation with some text. Thanks!

@tetsuyamorishita

Regtests

See #422

@tetsuyamorishita I merged all your commits into a single one.

Notice that I reimplemented the Communicator function that you needed
(Max) together with a few others (Min and Prod).

See #422