Akihiro Matsukawa

Checkpoint stateful handlers and metrics

3

## 🚀 Feature Things that are attached to the `Engine` might have state that would ideally be checkpointed and restored using as part of the `Engine`'s `state_dict`. An example is...

Merging nested readonly structured configs doesn't work.

2

**Describe the bug** Merging nested readonly structured configs doesn't work. There seems to be code to temporarily unset the read-only property of the outer-most container prior to merge to make...

One should be allowed to re-instantiate a structured object with missing values

3

Defining dataclasses to introduce schema seems like a great idea. But, sometimes we have missing values, and there is `omegaconf.MISSING` to express this. However: ```python from omegaconf import OmegaConf, MISSING...

**Is your feature request related to a problem? Please describe.** Having to actually create the file each time a new link is added slows down writing. **Describe the solution you'd...