make initializer and regularizers immutable types
l1 regularizer.
cuda L1 regularizer.
refactor: explicit empty backward and shutdown func
refactor: put shutdown and setup together
refactor: forward-and-reset-diff
net now do explicit reset-diff when backward is needed
Merge branch 'dev' of github.com:pluskid/Mocha.jl into dev
Merge remote branch 'origin/master' into dev
manual clean up failed attempts of refactoring
detect and report error if output blob is used as multiple input blob
update cifar10 document.
data transformer
data transformer for cuda
doc for data transformers
add data transformer support for HDF5 data layer.
transformers for memory data layer.
update doc.
doc for loss layers.
document for convolution layer.