6.4.0

• ADDED: Add ODF Header metadata and fix issue with LaTeX Header metadata
• ADDED: Add additional tests for special characters
• ADDED: Add initial OPML export support (address #9)
• ADDED: Add opml option to read for MultiMarkdown OPML files
• Add missing Latex support files
• Avoid potential error with stack_free
• CHANGED: Remove unnecessary code
• FIXED: Allow caption without trailing newline at end of document
• FIXED: Escape square brackets, e.g. '{[foo]}' (addresses #128 and #129)
• FIXED: Fix escpaing of % character in LaTeX code spans and blocks
• FIXED: Fix html comments inside code blocks (fixes #118)
• FIXED: Fix issue where ~ is mistakenly interpreted as fence delimiter
• FIXED: Fix issue with BOM and files > 4k
• FIXED: Fix issue with dollar math delimiters inside code (fixes #134)
• FIXED: Fix token length in OPML
• FIXED: Improve OPML export; add OPML tests
• FIXED: Normalize line spacing in CriticMarkup notes in LaTeX (fixes #120)
• FIXED: Preserve tabs following leading hashes in code blocks
• FIXED: Prevent potential null dereference
• FIXED: Remove lock file
• FIXED: Trim single remaining whitespace when exporting headers
• FIXED: Trim trailing newlines in definition blocks
• FIXED: Use Setext headers when necessary to convert from OPML to text (fixes #138)
• FIXED: Use \ul instead of \underline when soul package is in use (fixes #121)
• Merge pull request #132 from jlargentaye/develop
• UPDATE: Clarify DevelopmentNotes re: libcurl
• UPDATE: Clarify README re: libcurl
• UPDATED: '\item{}' no longer needed since square brackets escaped on their own
• UPDATED: Add 6.3.1 release notes
• UPDATED: Add allowfullscreen to list of boolean HTML attributes
• UPDATED: Add more BibTeX test cases
• UPDATED: Adjust metadata for test files
• UPDATED: Allow '' to preserve line break in metadata. (Addresses #86)
• UPDATED: Apply astyle
• UPDATED: Fix whitespace with boolean HTML attributes
• UPDATED: Ignore escaped space at end of code span
• UPDATED: Test % escaping in URLs