Update python package version

Bump minor version because of an added feature.

Update python package version

Let's go to 1.0.3 directly, to match the crate (without necessarily committing to always matching it in the future)

Bump python package version

Fix grammar

Use env var to set maturin repository

Attempts at using args failed.

Fix the maturin upload command

Do not build wheels for all python versions on macos

Jobs failed because macos was missing some python versions.

Update CONTRIBUTING.md with Python info