Version 2.0.0

• Fix Composer version constraints [#140]
• Move command over to new v2 structure [#139]
• Fix @var tag for check->_message [#134]
• Add value_is_not setting to option value check [#133]
• Move the options header for check command docs [#132]
• Revert "Validate MIME type against extensions" [#130]
• Add --format=count to supported formats [#127]
• Exit code 1 for any failed checks [#125]
• Validate MIME type against extensions [#120]
• Check for available language updates [#119]
• Updated PHP_In_Upload check's class description [#118]
• Check for PHP files in Uploads folder [#117]
• Detect presence of wp_cache_flush() [#116]
• Remove composer.lock; update test string; use dist: precise for PHP 5.3 [#114]
• Update package with latest scaffolded components [#112]
• Update test suite to get tests passing again [#110]
• Fix Travis CI caching for composer [#109]
• Falsy File_Content [#107]
• Warn instead of error when RecursiveDirectoryIterator excepts [#105]
• s/doctor/doctor-command/ [#101]
• Reduce number of Travis builds by only running WP_VERSION=trunk once [#100]
• Regenerate README for general WP-CLI consumption [#99]