Release 1.0.0!

* New models
* Reuse block model predictions in builder.py
* Use a fixed y axis position for the map
* Center the track on the map
* Add support for reading items from the map in gbx.py
* Add new blocks to blocks.py
* If the car was on grass in replay, treat it like a standalone block
* Make preprocessing.py generate all needed files for training / inference
* Finish gui.py