learning rate refactor first commit
commenting, moving exponential and constant under SingleLearningRate, removing AdaGradLogistic
more removal of AdaGradLogistic
return model
cleanup
moving regularization updater and learning rate computation to an optimizer class
removing exponential
removing lrc
removing RegularizationUpdater and losing comments
updates described here: https://github.etsycorp.com/gist/clynch/1266623
description of updates here: https://github.etsycorp.com/gist/clynch/a03f9be733ed456efbe5
removing old multiclass stuff
adagrad cleanup
default constructor builds new mira optimizer
updating multiclass mira
doing model teardown
Merge pull request #17 from etsy/adagrad

SGD refactor