Release 0.5.0

This code is based on the version of swift-cmark that was built into the Swift 6.0 release.

What's Changed

• Swift markdown support by @compnerd in #69
• build: remove extra defines on Windows by @compnerd in #68
• build: include include in INTERFACE_INCLUDE_DIRECTORIES by @compnerd in #70
• Add define for GNU glibc extensions by @bnbarham in #71
• build: add cmark-gfm-config to allow wiring up builds by @compnerd in #72
• [6.0] Build with Position Independent Code unconditionally by @bc-lee in #74

New Contributors

• @bnbarham made their first contribution in #71

Full Changelog: 0.4.0...0.5.0