V0.0.7 Support more architectures

What's Changed

• Update Maturin to 1.2.3 and build aarch64 wheels by @Adoni5 in #42
• Cross compile to linux {aarch64, armv7, x86_64}, {musl, gcc} and macOS {aarch64, x86}. Add tests to the CI suite for all but macOS aarch64
• Currently uses submodules of forked minimap2-rs - will be converted back to using the official crates once jguhlin/minimap2-rs#46 is merged.

Full Changelog: v0.0.6...v0.0.7