Develop upgrade to 2.3.2

Ready to release 2.3.2

Develop bugfixes 2.3.1

Set of bugfixes ready to be merged before releasing 2.3.2

Develop hotfixes 2.3.1 a

Already fixed bugs that leaked into master.
Added .gitignore rules to ignore files with '#' in both ends of filename (emacs).
Fixed testing script to not warn when '.Rcheck' folder already exists.

Clim user manual

Documentation ready

Crps

The function created by Luis to compute the CRPS has been uploaded and I've added the documentation.

It would be great if @obellprat could test it.

Upgrade to 2.3.1

Upgraded documentation

Develop bugfixes 2.3.0