v0.1.0 Pre-alpha release

This version number represents a move to the semantic versioning scheme. The previous release was 0.08.

Since the last release, there are a few bugfixes, more tests, and a few new features:

• system instance of Dinit now reads initial environment variable settings from a file at startup
• services can be unloaded, if they have no dependencies, via the dinitctl utility
• working directory for a service can be specified in its service description.

With these changes, Dinit is ever more capable as a service manager, but is still not considered ready for production.