…nute resolution

mlp.py:
 - added docstring

Wet dry example.ipynb:
 - Do pre-processing in one cell, refer to  "Basic CML processing workflow.ipynb" for more details.
 - Investigate two interesting CMLs
 - Shorten the notebook to only compare baselines.

Update: The MLP was retrained using more CMLs and a larger validation dataset.

Wet dry example.ipynb:
- re run notebook with retrained weights

mlp.py:
- updated docstring to match retrained architecture

model_mlp.keras:
- updated weights and architecture

test_wet_dry_mlp:
- updated to run with new weights

Rain event detection methods.ipynb:
 - Renamed example notebook to current name
 - Updated cosmetic suggestions in example notebook