v1.3.0

Feature:

• add default parallel asyncio implementation if curio is not present.
• add run_once decorator
• bunp pytest dependency
• Deprecation notice on async_btree.utils.run
• Add BTreeRunner context manager to drive multiple independant btree execution.
• This implementation works with curio and asyncio.
• asyncio support only for python >= 3.11.
• remove version package attribute. Single source of true is pyproject.toml and git.