* Add a multi-process, gulp-based build system to support es6 features,
async/await, jsx and scss
* Add a package.json to support dependency management and allow starting
the build process via npm
* Replace embedded Bluebird library with npm-installed one
* Add react, react-dom and web-library
* Introduce a custom require() loader in include.js as well as a minimal
local require() implementation in various other places
- Different constructor parameters
- id property for logging
- fcall() -> start()
- add() to enqueue without starting
- runAll() to run down queue and return promises for all current tasks
- wait() to wait for all running tasks to finish
