Implemented `toJsonObject` and allowed `fromJson` to accept JSON objects#10

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lemnik wants to merge 2 commits intottezel:masterfrom

Commits on Nov 2, 2016

Implemented `toJsonObject` and allowed `fromJson` to accept JSON objects that can be embedded in larger serialized structures
lemnik
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Commits on Mar 27, 2017

Added the `probabilities` function to allow more details of each categories probability
lemnik
committed