Package versioning

I propose to forget about PlatformIO 2.0. We are working on the PlatformIO 3.0 and new decentralized architecture for development platforms. All platforms related code has been moved to separate repositories. You will be able to clone/modify or create own development platform in a few steps.

Now, each development platform defines own requirements, contains own build scripts, LD scripts, examples and etc. See:

Related GitHub issue from PlatformIO 3.0 roadmap: