pytorch implementation of the IndRNN Paper (https://arxiv.org/pdf/1803.04831.pdf)
The test functions are adapted from the tensorflow implementation (https://github.com/batzner/indrnn). Tested with Python3.5 and pytorch 0.3.1/0.4.0a0+5edf6b2
TODOs: -get parameters for MNIST experiments -add permutation MNIST test