v1.34.1

Bug fixes and other changes

• enable line-too-long Pylint check
• improving Chainer integ tests
• update TensorFlow script mode dependency list
• improve documentation of some functions
• update PyTorch version
• allow serving script to be defined for deploy() and transformer() with frameworks
• format and add missing docstring placeholders
• add MXNet 1.4.1 support

Documentation changes

• add instructions for setting up Cloud9 environment.
• update using_tensorflow topic