1.22.0
#190 Remove urm plugin
Resolves checkstyle errors for remaining p (#1091)
#1021 enforce Checkstyle rules in the build
Work on #190: urm/puml updates * added pumlid where it was missing and possible * removed pumlid where it generated a bad image * regenerated some incorrect puml's * added 'left to right direction' puml prefix to some diagrams to improve the automatic layouting
Update license headers