Better memory management

This release resolves a memory leak when using cmark_markdown_to_html by providing a new API cmark_gfm_markdown_to_html that controls the extensions and releases correctly.

Note: cmark_parse_document no longer manually adds the extensions - you should do this yourself and release them when finished

2.0.0

CMark GFM for SwiftPM 2.0.0

This release drops support for Swift 3 and Swift 4. It also (finally) actually adds the extensions to fully support GitHub Flavoured Markdown!

Included in this release:

• #2 Add GFM extensions
• #3 Update to Swift 5 and migrate to GitHub Actions

1.0.1

cmark-gfm 1.0.1

Fixes an issue when building in Xcode 10