0.23.1

• Improve task resolution to support grunt plugins which don't have a requirable main script or index.js file #191
• Introduce the grunt-release plugin for making lineman releases easier. It went mostly okay:

$ grunt release --gruntfile Gruntfile.internal.coffee
Running "release" task
>> Version bumped to 0.23.1
>> package.json committed
>> New git tag created: 0.23.1
>> pushed to remote
>> pushed new tag 0.23.1 to remote
>> published 0.23.1 to npm
Warning: Error creating github release. Response: Request forbidden by administrative rules. Please make sure your request has a User-Agent header (http://developer.github.com/v3/#user-agent-required). Check https://developer.github.com for other possible causes. Use --force to continue.