* Upgrade lodash and drop underscore.string (Bryan Clark)

 * add console.error message to a bad require in a boot script (Bryan Clark)

 * Support per-application registry of models (Miroslav Bajtoš)

 * Use filename as default value for Model name (Pradnya Baviskar)

 * compiler: code cleanup (Miroslav Bajtoš)

 * Improve the resolution of relative paths  - resolve module relative path for component  - prioritize coffeescript over json (Pradnya Baviskar)

 * Resolve module paths as relative to appRootDir - for middleware (Pradnya Baviskar)

 * Support for multiple apps in browserified bundle. (Krishna Raman)

 * Resolve missing file extension for module relative paths (Pradnya Baviskar)

 * Resolve module paths as relative to appRootDir (Pradnya Baviskar)

 * Resolve relative paths in  using appRootDir (Pradnya Baviskar)

 * Add feature to disable component (Pradnya Baviskar)

 * Fix test for different line endings on Windows (Pradnya Baviskar)

 * Refactor unit test assertions to be more specific (Simon Ho)

 * Add unit test to verify `app.booting flag status (Simon Ho)