Tests brought up to date with changes in module repo structure.
First attempt of cross valid written.
Change description to version 0.3 for cross validation.
Moved definition of RunModels into workflow to hackily make enviornments work. will fix properly later.
Tests altered to reflect new structure
Merge remote-tracking branch 'upstream/master'
added unexported function to install/load packages
switched function into zoon.r and beefed it up so that it now handles github packages too