v0.1.0: Alias version 1.0.0-M1 to 0.1.0
This reflects a decision to change the project's pre-release version
naming scheme from a milestone-based approach to the 0.* approach more
typical of semantic versioning-based projects.
Note that no new artifacts have been published with this new 0.1.0
version name. This new "alias" tag is being created here for the sake
of consistency and continuity with future 0.* tags.