renamed pegasos/opegasos to hinge/ohinge and implemented L1 variant
split the regularization and use is as an template
Updated to split regularizer from optimizatin code
simplified regularization code
use of int for sgn
implemented online OSCAR
added oscar for regularization
implement regularizer in a separate file
added learning rate implementation
Refactoring online/asynchronous learner
Refactor online/asynchronous learning code (TODO: merge algorithms!)