Extractors and reducers for drawn shapes

This update adds support for aggregating shapes drawn with the drawing tools. This only adds support for shapes with specified parameters, not shapes with unknown numbers for vertices (e.g. polygon, freehand, etc...).

The shape reducer has and optional keyword symmetric=True that will allow shape symmetries to be taken into account before clustering. E.g. an ellipse with angle=0 and angle=180 will be considered the same.

Add shortcut task support

This release adds support of the shortcut task.

v1.0.0

This is the first stable release of the code!

More extractors and reducers

Add extractors and reducers for more task types.

aggregation beta

Initial release for beta testing. Basic off-line aggregation for point clustering, question tasks, and survey tasks are provided. As this is a beta release the output is subject to change and may be different once v1.0 is released.