Checkpointer
	
struct defined in module 
	FluxTraining
			Checkpointer(folder)
			Saves 
			learner.model to 
			folder after every 
			
			AbstractTrainingPhase
		
.
			Use 
			FluxTraining.
	
			
			loadmodel to load a model.
There is
			1
			method for FluxTraining.Checkpointer:
		
The following pages link back here:
learner.jl , FluxTraining.jl , callbacks/logging/checkpointer.jl