mozharness 0.7

[escapewindow]

There's been another arbitrary version bump!

What's changed?

• Android Panda unittests with mozpool,
• Gaia unittests,
• Gaia pushbot,
• Servo builds,
• Android x86 emulator unittest support,
• C++ unittest support,
• desktop talos (rolled out!),
• optional config files,
• pulling config files from a url,
• system resource monitoring,
• action/script hooks,
• additional VirtualenvMixin enhancements,
• fixed windows rmtree,
• made ReadOnlyDict fully lockable,
• TBPL exit_status levels,
• fixed TBPL worst_level() usage,
• added _post_fatal() callback,
• consolidated OSMixin and ShellMixin to ScriptMixin,
• output timeouts,
• run_command() env printing,
• load_json_from_url(),
• max log size,
• additional Boot2Gecko emulator tests,
• b2gbuild.py: removed snapshots, gaia packaging, debug build support, ...

... and we have a lot of work in progress that will be ready to land shortly.

I think the best sign is we're getting more and more contributors to the project. Stay tuned for more goodness.