What's Changed
* Set default format of structured dataset to empty by pingsutw in https://github.com/flyteorg/flytekit/pull/1159
* Adds CLI reference for pyflyte by samhita-alla in https://github.com/flyteorg/flytekit/pull/1362
* Update plugins requirements files versions by eapolinario in https://github.com/flyteorg/flytekit/pull/1365
* Signaling by wild-endeavor in https://github.com/flyteorg/flytekit/pull/1133
* Adding created and updated at to ExecutionClosure model by wild-endeavor in https://github.com/flyteorg/flytekit/pull/1371
* Restrict numpy due to deprecated aliases by eapolinario in https://github.com/flyteorg/flytekit/pull/1376
**Full Changelog**: https://github.com/flyteorg/flytekit/compare/v1.3.0b2...v1.3.0b3