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This was caused by the model relying on a single RoadNetworkNode reference being used in the network and also in the Tile, which wasn't preserved when saving.

Removing comments from 2 lines.
This now re-enables Persistence to delete corrupted saves.

forgive me for commiting to master

Nuget Package : Newtonsoft
Saving and loading now work from VM
Loading still has issues, my thoughts are that model requires more things to be saved and loaded

This reverts commit aec9f4e1

small edits to make Persistence fit to the Model properly based on Geri's requests

Added documentation for GamePersistence methods
Added exception handling for GamePersistence methods
Added Application events, and methods to prepare for ViewModel
Tested GamePersistence methods, small edits won't cause exceptions in loading saves due to json serialization using defaults when fields that have default values get deleted

Load and save exceptions
Short info handling for saves

Added Exception
Added a serializeable PersistenceGameInfo
- json can't serialize matrices
Testing serialization options