Release 1.6.6

First of all, we win the Best Open Source Software Award @ACM MM 2017.

This is an incomplete list among the many features added.

• New Support

  • tl.prepro.illumination for changing image illumination by @yzwxx
  • tl.act.swish for Swish activation by @zsdonghao

• New Update

  • new scope name for tl.act.lrelu by @zsdonghao
  • more description for RL examples by @zsdonghao
  • AverageEmbeddingInputlayer for py3 by @zsdonghao
  • fixed bug of Seq2Seq : not saving parameters of encoder part by @zsdonghao

• Documentation by @zsdonghao @luomai