add explicit paramter for infinite iterators
set appropriate value for num_epoch param for iteratos
fix long lines
remove trailing whitespace
fixed typo
remove comment
fixed comments
fixed test
change ImagefolderDV2 name
change ds.transforms.vision to ds.vision
change batch api to match map api more closely
compose op changes
test_pylint
remove compose op from vision, move to transform module, refactor map and batch to use column_order
hetshah
Lixia Chen
Junhan Hu