GoogleCodeIn2012/Turtle plugins

Background: A number of activities, notably Turtle Art, are supporting plugins -- the ability to extend features by downloading additional modules. However, the mechanism for installing plugins is anything but friendly.

Task: Design a uniform plugin bundle type and modify the activity installer to recognize this new type. Caveats include dependencies -- presumably the plugin would take care of that -- and version control -- plugins are often incumbent upon a specific version of an activity. ASLO hosting] should also be considered.