TODO-LIST
=========
This is the list of things that are planned for the next updates:
- Write blog post about the type state pattern and publish new version.
- Implement some unit tests, testing the internals of layers.
- Optimize `FullyConnectedLayer` so that all associated layers have equal sizes.
- Split `FullyConnectedLayer` into `DenseLayer` and `ActivationLayer`.
- Add `InputLayer` as a new topology layer for initial topology building.
- Make topology layers mirroring true layer types.
- Improved layer architecture to support convolutional layers.
- Improved error handling: Less panics, more Results!
- Parallelization based on Producers from rayon interfacing via ndarray.
- Generic float type support (e.g. for future `f16`, `f32`, `f64`, `f128`)
- Implement GPU based parallelization.