* [intel] fix in AVX512F matrix vector product
* [tflite] alpha, embryonic support. some convolutional models working.
* [kaldi] remove abandonned kaldi experimental support
* [refactoring] Runtime abstraction and runtime-targetting tests
* [refactoring] Refactoring Python and C API around a possible tract-api. Introducing dylib support.
* [pytorch compat] fixes around node names starting by / (bug triggered by recent pytorch versions)