Tstring

Improves type annotations

**Full Changelog**: https://github.com/maxwelllevin/tstring/compare/v0.1.1...v0.1.2

* [Add downloads badge](https://github.com/maxwelllevin/tstring/commit/54291291d980901cb929f2b5fc5d30bb48b0d2fe)
* [Create LICENSE.md](https://github.com/maxwelllevin/tstring/commit/aad2cb84811c65b48a8041d818d380d804c9bcb3)
* [Add special mypy type file](https://github.com/maxwelllevin/tstring/commit/aeeb2378ff0ca67e528b1793aec29226dfd9d5b0)
* [Include py.typed in package build](https://github.com/maxwelllevin/tstring/commit/74e92310ad855dd412deb52d698601395f4ec992)

**Full Changelog**: https://github.com/maxwelllevin/tstring/compare/v0.1.0...v0.1.1

General improvements

* Fixed bug where optional substitutions were actually required
* Added CI/CD

**Full Changelog**: https://github.com/maxwelllevin/tstring/compare/v0.0.1...v0.1.0

Initial release

**Full Changelog**: https://github.com/maxwelllevin/tstring/commits/v0.0.1