ooici/coi-services — pull request #974 by lukecampbell (2013-04-19 17:20:05+00:00)
Title: Fixes RDT bug with Sparse Values and preps for test

- RDT doesn't like sparse values, they aren't handled the same way as a
coverage handles them so now there is a spanify wrapper which manages
the span objects inside the storage.
- Certain parameter contexts are failing at creation time due to numpy
not being JSON compliant, added a walker to convert them

TODO: Need to weed out NaN in the walker