Added routing capability to the CompositeLayer
Fixed some bugs in CompositeLayer and added a unit test
Removed get_weights method from CompositeLayer for now since it's not really clear to me how it should behave
Formatting
Fixed CompositeLayer unit test
Implemented get_weight_decay and get_l1_weight_decay methods for CompositeLayer
Fixed over-enthusiastic copy-paste in CompositeLayer's get_weight_decay method
CompositeLayer only gets weight decay penalty for layers which have a coefficient > 0
Typo
Removed __init__ docstring from CompositeLayer, less strict error-checking
Changes to CompositeLayer after code review, fixed logic error in inputs_to_layers dictionary inversion
Added test case for CompositeLayer
Merge pull request #839 from bartvm/composite_layer

Composite layer with routing