Changes since alpha-6:
- windows support
artifactsconfiguration option for validation of non-Erlang rebar3 generated artifacts (hooks, etc.)- improvement to escriptize provider
- Dialyzer provider is made compatible with rebar 2.x's so the option set is shared across releases
- exporting config vars to the environment for hooks to be compatible with rebar3's structure
- nicer error messages
- CT fixes
- added a
pluginsnamespace with providers to list and upgrade them - lots of plugins fixes
- rebar3 builds from packages
- package list is sorted
- fixes to relx argument orders