fixed __version__ + fixed bug with maturin pipeline due to

v0.1.18

fixed __version__ + fixed bug with maturin pipeline due to change in …

polodb-python v0.1.17

Full Changelog: v0.1.15...v0.1.17

polodb-python v0.1.13

Full Changelog: v0.1.12...v0.1.13

polodb-python v0.1.12

Full Changelog: https://github.com/PoloDB/polodb-python/commits/v0.1.12