Fix panel.js path in panel.html
Update license and copyright file headers.
Version Underscore file.
Add rudimentary browser popup.
Tell JSHint to ignore more folders.
Update README.
Add extension JS bundles.
Add modules/bundling, remove gulp.
Restore dist task via standalone packaging script.
Switch package.json to tilde version range syntax.
Reorganize project folder layout.
Print bundling errors during the build task.
Add TODOs to build task.
Update README.
Update extension description.