Version 1.0 Release, initial public release

It is encouraged to work off of main, which should typically be possible since we have a philosophy of avoiding API breaks, but v1.0 is the first stable release for those who wish to work off of stable releases.

v1.0, corresponding to initial public release. There is a variety of functionality present, see the README.md.

Future releases will bump minor version for significant new functionality. Major versions will only be bumped when API changes are not backwards compatible, which will be very rare, and avoided if at all possible. If severe bugs are fixed that affect already tagged releases, those releases will be bumped with a patch version.