Minor refactoring to make the query and keys to translate the query into JSON for the front=end be carried in one data structure (view).
Removed colored rectangles used to show bounding box for debugging.
Added support for displaying user-provided axis labels.
Added support for domain encoding and labels.
Merge pull request #5 from salspaugh/refactor

Refactored how input is provided to aptremake and added support for labels for encoded data values.