Move ChainDemo train order to unit test #24
Description
ChainDemo depends on file "chain_train.csv" to read a specific order of the training examples.
Instead, move this to a unit test and let ChainDemo decide its own order.
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ChainDemo depends on file "chain_train.csv" to read a specific order of the training examples.
Instead, move this to a unit test and let ChainDemo decide its own order.