Grunt 0.4.5 is now available on npm. Thanks to Gary Burgess, James Smith and Carlos Mantilla for their patches. Also, thanks to Vlad Filippov for helping triage issues, troubleshooting Windows CI testing and putting together the changelog. In this release, we closed around a dozen issues, added the much-requested grunt.task.exists and grunt.config.merge methods, and set up Windows CI testing throu