+ added maven-managed alternative for the yang tools wrapper, updated upstream version numbers

See merge request !5

+ added BND-based alternative for the yang tools wrapper (more streamlined, not integrated yet, WIP)

copy dependencies -> generate class path -> update manifest

+ fixes for prepare and CI scripts

See merge request !4

* merge dev with latest fixes

See merge request !3

+ added yang tools wrapper

See merge request !2

* updated readme and manifests

-remove redudancy

See merge request !1