0.8.4 - minor improvements

• various documentation updates (thanks @thegecko and @maclobdell!)
• add experimental --json output to yotta ls (thanks @bremoran) – note that the output format is currently provisional, and its stability should not yet be relied upon
• use requests[security] as the requests dependency in order to improve security on platforms < python 2.7.9
• fix cases where running two instances of yotta in parallel under the same user could cause one of them to fail
• ensure that corrupt download files cause a graceful failure with clear error message

0.8.3 - bugfixes

• fix case where an exception could occur unpacking tarballs containing paths ending in /
• yotta update now correctly checks for updates to test dependencies, and has a command line option for controlling this behaviour

0.8.2 - cached treasure

• Cache downloaded modules in ~/.yotta/cache for faster installs
• Fix support for pulling tags and branches from plain .git repositories (thanks @markus-becker-tridonic-com!)
• Support JSON Pointer syntax in targetDependencies keys. This is now the preferred way of doing config-dependent dependencies. The old dot syntax will be deprecated in a future version.
• Several documentation improvements
• Reduce the path lengths used when unpacking tarballs, to minimise the chances of hitting window's path length limit
• Various improvements to yotta's tests.

0.8.1 - try again

• retry failed connections
• display more human readable description of where things are being downloaded from
• add header paths to generated CMakeLists so that IDEs can display them (thanks @eyeye!)
• fix interactive mbed login failing to complete
• various other bugfixes and improvements

0.8.0 - who am I?

New Features

• New yotta whoami command to display whether you are currently logged in.
• The merged config data is now written to a file, and is available for CMake
  to process.
• Relax target.json schema to allow arbitrary config strings
• support requests by the yotta registry for authentication on more endpoints
• support YOTTA_USER_SETTINGS_DIR environment variable to override the directory from which to load user settings (used by the test environment).

Other Improvements

• The CI system now runs pylint.
• The CI system now runs coverage*.
• added tox for easier multi-python version testing
• fixed various code issues related to lint scanning
• fix case where additional include directories specified by test dependencies
  would be relative paths
• fix case where tests of test dependencies would be compiled incorrectly if they were described by custom CMake
• send version and client ID headers to the registry to make
  backwards-compatible updates easier
• various other bugfixes and improvements

* note that the coverage information is currently incomplete, as test subprocesses are not yet tracked

0.7.1 - Many many fixes

• Information about the build is now available by #include-ing YOTTA_BUILD_INFO_HEADER. See the documentation for more.
• It is now possible to pass arguments to programs run by yotta test (see #393 for details)
• Fix erroneous warning when using nested config values in targetDependencies (thanks @bremoran!)
• Changes to the config data now correctly trigger builds (automatic build system only).
• Updated linux installation instructions to be more reliable on Ubuntu (thanks @BlackstoneEngineering!)
• Fix issue that could cause build failures under python 3 (thanks @jserv for reporting!)
• set exit status correctly from yotta login
• documentation has moved to http://yottadocs.mbed.com from http://docs.yottabuild.org (the old site will continue to redirect indefinitely)
• attempt to work around issues removing recently created files on windows caused by antivirus software holding locks on them
• various other bugfixes and improvements

0.7.0 Add --noninteractive mode

• add non interactive mode to prevent waiting for user input
• adds intelhex as a dependency so that it is available to target descriptions (thanks @bridadan!)

0.6.2 - bugfix

• fix cases where yotta config values could have different truthiness in dependency evaluation vs. preprocessor/cmake definitions

0.6.1 - Minor Improvements

• the application root directory is always included in the header search path (enables various uses of the config system to select user-defined headers to include)
• add a newline at the end of JSON files when writing them (since most editors will add this when these files are manually edited)
• clarify documentation for using hg repos (thanks @jagomo!)
• fix an error when updating a non-existent target

0.6.0 - ninja by default

• ninja is now the default make tool: you will now need ninja installed on
  linux and mac systems to perform a build (it has always been listed in the
  installation instructions), build output will look different (but builds
  will be substantially faster).
• new yotta outdated subcommand
• --save option is now default to yotta install (an installed module will be added to module.json). The --save flag is now ignored.
• support mbed login in addition to github login
  where applicable
• display search results from all configured registries
• fix crash in yt init when running with defaults
• improve handling of github errors
• various other minor bug fixes and improvements

Thanks to @theotherjimmy and @BlackstoneEngineering for contributing many of the improvements!