Please clarify which branch or start tagging build versions

[btgoodwin]

It's unclear what is the best, most stable potential starting point for compiling the library. For example:

1. The master branch readme says to use the m104_release branch.
2. The m104_release branch readme says to use the m97_release branch.
3. The m97_release branch readme says to use the M92 branch from a different repository.
4. And so forth...

It's very unclear exactly what branching and versioning strategy is being used here given that each branch recommends building a different branch.