* load model function in shufflenet

* cifar10-resnet-mixup implementation

* add two file

* code beatify

* 1,bn typo;2,cifar18 preact18 mixup code

* double epoch number

* two file into one file

* make travis happy

* preactblock error

* travis please happy

* result update

* clean-up duplicate sections

* Update schedule and readme

* add VGG19 demo

* add pretrained model url (upload will be later)

* fix vgg16 and fix linting in vgg19

* enable image exceptions and make this default behavior

* change allow_exceptions to catch_exceptions; use contextmanager

* fix linter and update docs