Log Message:
textproc/hs-commonmark: Update to 0.2.6

0.2.6
* Make list tightness match the reference implementation closer (#150,
  Michael Howell). This solves the problem where blank lines in the middle
  of a list are attributed to the list itself instead of the item, making
  its parent list become spuriously loose.
* Fix bug with entities inside link destinations (#149). The bug affects
  cases like this: [link](\!); the backslash escape was being ignored
  here.
* Commonmark.Entity: export pEntity [API change].

0.2.5.1
* Replace source with search in list of block tags. This is a spec 0.31
  change that was forgotten in the last release.

0.2.5
* Fix HTML comment parser to conform to 0.31.2 spec.
* Update spec.txt tests to commonmark-spec 0.31.2.
* Match HTML declaration blocks with lowercase letters (Michael Howell).
* Specifically track the position where enders end (Michael Howell).

0.2.4.1
* Commonmark.Html: Add aria-hidden, d, and viewBox to allowed attributes
  list.
* Correctly merge list blanks with non-list blanks (#133, Michael Howell).
* Do not look for backslashed hard breaks in link titles (#130, Michael
  Howell).
* Work around ghc bug with -K RTS options, to set the stack space properly
  for tests (#129). See https://gitlab.haskell.org/ghc/ghc/-/issues/10445.
* Revert block state completely if lazy line (#126). This fixes an issue
  with lazily-wrapped footnotes.
* Avoid adding trailing newline to list block if it's already there
  (Michael Howell). This fixes tight/loose classification in a few cases.
* Fix incorrectly parsing links with nested [] (Michael Howell).