Polish
Merge pull request #87 from softcover/unicode-highlight-cache-62434202-62433730

Unicode highlight cache 62434202 62433730
Merge pull request #88 from softcover/62668410-pdf-png

62668410 pdf png
Merge branch 'master' into stable
[#62685096]

* doublebackslash-62685096:
  Issue pull request for branch doublebackslash-62685096
  Add support for \\ in Markdown
  Bump version number
Merge branch 'master' into stable