Update changelog

CHANGELOG.md

@@ -1,3 +1,28 @@
+* 1.0.0-alpha6 (2012-10-22)
+
+  * Schema: Added ability to pass additional options to repositories (i.e. ssh keys/client certificates to secure private repos)
+  * Schema: Added a new `~` operator that should be prefered over `>=`, see http://getcomposer.org/doc/01-basic-usage.md#package-versions
+  * Schema: Version constraints `<x.y` are assumed to be `<x.y-dev` unless specified as `<x.y-stable` to reduce confusion
+  * Added `config` command to edit/list config values, including --global switch for system config
+  * Added OAuth token support for the GitHub API
+  * Added ability to specify CLI commands as scripts in addition to PHP callbacks
+  * Added --prefer-dist flag to force installs of dev packages from zip archives instead of clones
+  * Added --working-dir (-d) flag to change the working directory
+  * Added --profile flag to all commands to display execution time and memory usage
+  * Added `github-protocols` config key to define the order of prefered protocols for github.com clones
+  * Added ability to interactively reset changes to vendor dirs while updating
+  * Added support for hg bookmarks in the hg driver
+  * Added support for svn repositories not following the standard trunk/branch/tags scheme
+  * Fixed git clones of dev versions so that you end up on a branch and not in detached HEAD
+  * Fixed "Package not installed" issues with --dev installs
+  * Fixed the lock file format to be a snapshot of all the package info at the time of update
+  * Fixed order of autoload requires to follow package dependencies
+  * Fixed rename() failures with "Access denied" on windows
+  * Improved memory usage to be more reasonable and not grow with the repository size
+  * Improved performance and memory usage of installs from composer.lock
+  * Improved performance of a few essential code paths
+  * Many bug small fixes and docs improvements
+
 * 1.0.0-alpha5 (2012-08-18)
 
   * Added `dump-autoload` command to only regenerate the autoloader