Generate project files for a single subproject only

[maffoo]

We have a build with a large number of subprojects (~30) and running sbt eclipse can take a substantial amount of time (most of it due to dependency resolution). It would be nice to have the capability in sbt eclipse to only (re)generate project files for a single subproject at a time. One possibility would be for the eclipse command by default to only generate files for the currently-selected project by default. If in the root project of the build, it would continue to generate project files for all subprojects, as it currently does. Another option would be to control this behavior with an argument passed to the "eclipse" command.

[hseeberger]

@maffoo thanks for opening this. It is an important feature and we will address it in 3.0.

[frozenspider]

Current version is 5.1.0. Is this implemented already?