v0.5.0

Version 0.5.0

It's one of the biggest updates since the library's first release.

We rewrote the whole code base because the new version of Pyo3 (v0.21.1) was released with a new implementation for asynchronous code.

Now native Rust code looks much simpler, easier to support, and supports adding new features faster and safer.

In addition, the PSQLPy driver became even faster than the previous realization. We increased performance by approximately 2 times in some cases, and by 15-50% in most cases.

Many thanks to the main contributor! @insani7y