TODO

• add minification and sourcemaps for development
• make code testable and write tests
  • module.js
  • index.js
    • write tests for negative (erroneous) cases
  • load.js
• move PubSub dependency outwards
• decide if it is useful to handle module dynamic reloading and what to do in that case
• check for circular dependencies
• support for recurring module() calls
• write README
• load error handling
• think about configuring modules by config
• make compilation of modules into bundles possible
• add .npmignore
• support AMD.js specification