Larcv

This release is a new, stable release that adds the following features:
- Docstrings are incorporated into most, though not quite all, python objects by default. This helps significantly in auto generating documentation.
- All pushes on all future branches now get tested by Github Actions by default.
- Releases will now be built and shipped to PyPI with source distributions by default.

The previous release missed files on pypi.

Switch to json for configuration, and python dictionaries. Include config_builder for ease of use.

**Full Changelog**: https://github.com/DeepLearnPhysics/larcv3/compare/v3.3.4...v3.4.0

This release is a minor increment that introduces an additional check on QueueIO and BatchData processing. In cases with very fast data reads, a race condition could cause instability. Now, there is an additional check to ensure it works.

Minor updates, but the changes to QueueIO require modifications to user code. Tagging a new release.

Minor updates and bug fixes, including getting the event/run/subrun bindings correct.