1.2.0-RC - released 2016-07-04

Changelog

Added caching of git repositories if you have git 2.3+ installed. Repositories will now be cached once and then cloned from local cache so subsequent installs should be faster
Added detection of HEAD changes to the status command. If you git checkout X in a vendor directory for example it will tell you that it is not at the version that was installed
Added a virtual php-ipv6 extension to require PHP compiled with IPv6 support
Added --no-suggest to install and update commands to skip output of suggestions at the end
Added --type to the search command to restrict to a given package type
Added fossil support as alternative to git/svn/.. for package downloads
Improved BitBucket OAuth support
Added support for blocking cache operations using COMPOSER_CACHE_DIR=/dev/null (or NUL on windows)
Added support for using declare(strict_types=1) in plugins
Added --prefer-stable and --prefer-lowest to the require command
Added --no-scripts to the require and remove commands
Added _comment top level key to the schema to endorse using it as a place to store comments (it can be a string or array of strings)
Added support for justinrainbow/json-schema 2.0
Fixed binaries not being re-installed if deleted by users or the bin-dir changes. update and install will now re-install them
Many minor UX and docs improvements