Merge pull request PyO3#111 from kngwyu/pyo3-0.8

Update pyo3 to 0.8 and bump version to 0.7

Merge pull request PyO3#96 from kngwyu/release0.6

Update PyO3 to 0.7 and release 0.6

Merge pull request PyO3#94 from kngwyu/version0.5

Bump version to 0.5.0

Bump version to 0.4.1

Merge pull request PyO3#86 from kngwyu/release0.4.0

Bump version to 0.4.0

Bump version to 0.4.0-alpha.1

Bump version to 0.3.2

Version 0.3.0

Merge branch 'v0.2.1'

Merge branch 'v0.2.0'