Add serialization (Weaver + JSON) support for Double[] and Double[][].
Modify TwoDimTable API to handle Double and String types, and serializes properly.
Add JUnit tests.
Merge branch 'master' of https://github.com/h2oai/h2o-dev
Modify TwoDimTable API to use double[] instead of Double[], same for [][].
Remove Double[] and [][] serialization.
Use TwoDimTable for DL's Neuron status and store it as modelSummary in the DeepLearningOutput, which will be part of the JSON as well (to be shown by the clients).
Merge branch 'master' of https://github.com/h2oai/h2o-dev