@leksar you can discard changes (git checkout -- .) before switching to the another branch (master) or you can stash them, and pop stash changes after branch switch. Anyway, It's to early for master switch, some changes are part of active pull request.
As I understand, this plugin will be fully supported by future 0.7.1 release of the NodeBB.
The nbbpm checks new packages that get added to npm, so if you unpublish your package, we won't know.
Best bet would be to keep the package there so users on old NodeBB versions can still install it, but put an nbbpm.indexed = false in package.json, so when it comes through from npm, nbbpm will know to remove it from the index.