Nuscenes-devkit

This version includes the following updates:
- Minor bug fixes.
- Fix PIL pip requirements.

This version includes the following updates:
- Add lidar basemap to map expansion
- Add script to generate instance videos
- Bug fixes, typos
- Challenge info, rules, results, rendering scripts
- Relax default requirements

This version includes the following updates:
- Tutorials on Google Colab
- nuScenes-lidarseg evaluation code.
- NeurIPS 2020 announcement.

This version includes the following updates:
- nuImages code.
- nuScenes-lidarseg code.
- Modular requirements.
- Overhaul documentation.

This version includes the following updates:
- New centerline methods
- Updated prediction tutorial
- Update map tutorial
- Script to export ego poses
- Dynamic figure size computation
- Better tests
- Updated documentation

This version includes the following updates:
- Relaxed pip requirements around torch/torchvision and pillow.
- Implemented l2 loss in prediction.
- Restructured and renamed prediction folder.