<commit_before>* 1.0.0-alpha3

  * Schema: Added 'require-dev' for development-time requirements (tests, etc), install with --dev
  * Schema: Removed 'recommend'
  * Schema: 'suggest' is now informational and can use any description for a package, not only a constraint
  * Break: vendor/.composer/autoload.php has been moved to vendor/autoload.php, other files are now in vendor/composer/
  * Added caching of repository metadata (faster startup times & failover if packagist is down)
  * Added removal of packages that are not needed anymore
  * Added include_path support for legacy projects that are full of require_once statements
  * Added installation notifications API to allow better statistics on Composer repositories
  * Added autoloading support for root packages that use target-dir
  * Added awareness of the root package presence and support for it's provide/replace/conflict keys
  * Added IOInterface::isDecorated to test for colored output support
  * Improved repository protocol to have large cacheable parts
  * Fixed various bugs relating to package aliasing, proxy configuration, binaries
  * Various bug fixes and docs improvements
<commit_msg>Update changelog<commit_after>* 1.0.0-alpha3

  * Schema: Added 'require-dev' for development-time requirements (tests, etc), install with --dev
  * Schema: Added author.role to list the author's role in the project
  * Schema: Removed 'recommend'
  * Schema: 'suggest' is now informational and can use any description for a package, not only a constraint
  * Break: vendor/.composer/autoload.php has been moved to vendor/autoload.php, other files are now in vendor/composer/
  * Added caching of repository metadata (faster startup times & failover if packagist is down)
  * Added removal of packages that are not needed anymore
  * Added include_path support for legacy projects that are full of require_once statements
  * Added installation notifications API to allow better statistics on Composer repositories
  * Added support for proxies that require authentication
  * Added support for private github repositories over https
  * Added autoloading support for root packages that use target-dir
  * Added awareness of the root package presence and support for it's provide/replace/conflict keys
  * Added IOInterface::isDecorated to test for colored output support
  * Improved repository protocol to have large cacheable parts
  * Fixed various bugs relating to package aliasing, proxy configuration, binaries
  * Various bug fixes and docs improvements

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