WIP on plugins

* initial tests for plugins
* update to use KS/add-classpath
* WIP: some plugin stuff working, need more tests
* WIP: progress on plugins.  Need to use `find-all-jars-in-dar`
* WIP plugins: shit broke. bootstrap or bootstrap* ?
* fix things broken when rebasing onto master
* WIP: remove unnecessary ctor
* WIP - plugins - got sources working?
WIP plugins; fixup some things screwed up in rebase