v0.12.1

MLJBase v0.12.1

Diff since v0.12.0

(enhancement) Add serialization for machines. Serialization is model-specific with a fallback implementation using JLSO. The user serializes with MLJBase.save and de-serializes with machine. See the MLJBase.save doc-string for details. Model-specific serialization is defined by methods MLJBase.save(model::MyModel, ...) and de-serialization with MLJBase.restore(model::MyModel, ...) (PR #218, JuliaAI/MLJ.jl#138, JuliaAI/MLJ.jl#292)

Merged pull requests:

• Add serialization (#218) (@ablaom)
• For 0.12.1 release (#219) (@ablaom)