    - nbsphinx==0.2.14
    - recommonmark==0.4.0
    - https://github.com/mli/notedown/tarball/master
    - mxnet-cu80==1.2.1
    - gluonbook==0.7.2
    - jieba==0.39
 
</s> remove             nn.BatchNorm(), nn.Activation('relu'),
            nn.MaxPool2D(pool_size=3, strides=2, padding=1))
 </s> add             nn.BatchNorm(), nn.Activation('relu')) </s> remove __version__ = '0.7.2'
 </s> add __version__ = '0.7.3' </s> remove   - gluonbook==0.7.2
 </s> add   - gluonbook==0.7.3
  - gluonbook==0.7.3
    - nbsphinx==0.2.14
    - recommonmark==0.4.0
    - https://github.com/mli/notedown/tarball/master
    - mxnet-cu80==1.2.1
  - gluonbook==0.7.3
    - jieba==0.39
keep keep keep keep replace keep
 gluonbook 0.7.3, remove maxpool from resnet18 
build/build.yml