PyPI version not up to date with main branch

[bsteiger]

The latest tagged version (0.3.4) is missing some type hint fixes that have been merged into main:

• Fixed type hint for execute_async #51
• Add all to export classes properly #52

When pip installing from PyPI, users are still seeing the type errors fixed in the above PRs. Could we please get an 0.3.5 version tagged and published to PyPI?