Only a handful of types had sensible tensorVal implementations. This is now evident in type signatures at the expense of them being more verbose.
* Sorted test names. * Don't require a terminal to run tests. Should resolve "the input device is not a TTY" problem with Jenkins. * Added build indicator to README.md. * Fixed up URL.
* Starting NN library - Added "sigmoidCrossEntropyWithLogits" - Ported across a single test
