TorchExplorer 0.3.0: separate multiple inputs/outputs, watch multiple modules,

Vega spec version: 1c

Release notes:

1. Fix histogram outlier rejection bug
2. Support for watching multiple modules in one training run
3. Better logging with wandb: immediate first-step structure logging and set commit=False
4. Add workaround for ulimit bug
5. Add "close panel" and "open module" buttons to the UI
6. Separate the single "Input" / "Output" node into several nodes in the explorer, if a Module has more than one input / output