Cyclic learning rate finder as a part of Trainer
🚀 Feature
Learning rate finder to plot lr vs loss relationship for Trainer and find a good starting learning rate.
Motivation
Cyclical Learning Rates for Training Neural Networks by Leslie N. Smith documents how to find a good learning rate for training with CyclicLR scheduler.
Pitch
Adding a methods to the Trainer class:

find() : Runs the CLR finder and plots the graph in Logger.