0.28.0.gfm.5

• Latest spec.
• Fix a typo in the spec (John Gardner).
• Fix quadratic behavior in reference lookups.
• Add core_extensions_ensure_registered.
• Add sourcepos information for inlines.

0.27.1.gfm.4

• Fix regression with nested parentheses in link targets (#48).

0.27.1.gfm.3

• Various undefined behavior issues fixed (#38, #39, #40).
• Tag filter is case-insensitive (#43).

0.27.1.gfm.2

• Fix a number of bugs (reading past end of buffer, undefined behavior.
• Add cmark_syntax_extension_get_private(). (Jonathan Müller)

0.27.1.gfm.1

• Add plaintext renderer.
• Remove normalize option; we now always normalize the AST.
• Add getters for table alignment.
• make install also installs the extensions static/shared library.

0.27.1.gfm.0

• Add extensions: tagfilter, strikethrough, table, autolink.
• Add arena memory implementation.
• Add CMARK_OPT_GITHUB_PRE_LANG for fenced code blocks.
• Skip UTF-8 BOM on input.