New Features
- New [`yotta shrinkwrap`](http://yottadocs.mbed.com/reference/commands.htmlyotta-shrinkwrap) command which can be used to peg the versions of dependencies (including indirect dependencies).
- `yotta outdated` will now display information about why updates are prevented.
- The `yotta ls --json` format is now intended to be stable, and can be consumed by other applications.
- If you publish a module or target which uses `-official` keywords (for example, `mbed-official`), yotta will check that's really what you meant to do.
Fixes and Under-The-Hood Improvements
- Improved CI setup now uses nose, and produces a JUnit description of failures
- many, many more tests for [`yotta test`](http://yottadocs.mbed.com/tutorial/testing.html), test runners, and test reporter scripts