Predictions implement the Serializable interface

added @JsonIgnore to deserialize instances of the class NystromMethod

Upgraded the dependency of jackson from 2.3.1 to 2.9.8 (to read/write json files)

update to tolerance in SequenceLearningLinearTest

SequencePrediction Functions are serializable

SequenceExampleGenerators are serializable

Minor correction in method name

Added Platt Normalization

Updating develop poms back to pre merge state

Merge branch 'master' into development

updating develop poms to master versions to avoid merge conflicts

Merge branch 'release/2.2.3'

updating poms for branch'release/2.2.3' with non-snapshot versions

updating poms for 2.2.4-SNAPSHOT development

updating poms for 2.2.3 branch with snapshot versions