dynaml-tensorflow: Added aliases in `dtflearn` object for

 - Radial Basis Function layer
 - Genearlised logistic activation function

Signed-off-by: mandar2812 <[email protected]>

dynaml.tensorflow: Added Dynamic System simulation and inference

 - FiniteHorizonCTRNN: A continuous time recurrent neural network layer.
 - Loss for time slices of multivariate time series.

Release v1.5.2 ready!

Release 1.5.2-beta.4

dynaml-repl: Fix to command line args when executing script with main…

… annotation

Merge branch 'master' of https://github.com/transcendent-ai-labs/DynaML

Limited breeze imports to avoid conflict in namespace with TF

Rewind of MatrixNormalRV apply method

Minor clean up in core GP code