Use jit-grunt to load grunt tasks dynamically
Add time-grunt to show task runtimes
Whitespace
Add support for grunt-blanket-mocha

Allow gruntOptions to be a function (optionally) and expose
window.PHANTOMJS as env.isHeadless(). Also simplify CoverageRunner a
bit and delegate loading of the test modules to a TestLoader.
Release notes for 0.3.2
Bump version to 0.3.2
Merge branch 'development'