Merge pull request #22 from mstallmo/trt-plugins

Add support for loading built in TensorRT plugins

Make the ouptut of context execute generic by taking a mutable refere…

…nce to an allocated ndarray.

Bump minor version number for tensorrt for the change to the arguments and return type of execute.

I would like to return the result from execute in the future but working with ndarray's as generics has proven to be a bit tricky so this is the best solution for now.