44930b2d is the fix for the recent (fairly unlikely) SQL injection vulnerability in Active Record.
cb2bd4aa merges in work to replace update_attributes with update.
009873ae solidifies Rails treatment of executables: "Introduce ./bin for your app's executables: bin/bundle, bin/rails, bin/rake. Executable scripts are versioned code like the rest of your app. To generate a stub for a bundled gem: 'bundle binstubs unicorn' and 'git add bin/unicorn'".