Finalise WunderTools wrapper

[aleksijohansson]

wunderio/radi-project-wundertoolswrapper#3

[james-nesbitt]

A large mount of effort has gone into the wrapper : wunderio/radi-project-wundertoolswrapper#10

If this passes testing, then we are probably good for a first release. I have many more ideas on how to implement it, but all suffer at the architecture of the wt layout. I would like more practical use of the wrapper before implementing more ideas.

[james-nesbitt]

all that is left on this is:

1. drush produces strange contstrained output radi-project-wundertoolswrapper#14 : drush output is weird
2. Finalise the documentation radi-project-wundertoolswrapper#5 : documentation

although is a concern:
a. wunderio/radi-project-wundertoolswrapper#15