v0.3.0

0.3.0 version: Improved pretrained weights released

We release the most recent pretrained model: CHGNet 0.3.0 🎉 (see details)
CHGNet.load() now defaults to '0.3.0' version.

Major changes:

1. Increased AtomGraph cutoff to 6A #55
2. Resolved discontinuity issue when no BondGraph presents #79
3. Added some normalization layers
4. Slight improvements on energy, force, stress accuracies

Full Changelog: v0.2.2...v0.3.0