- update to 0.29.0
* Update spec to 0.29.
* Make rendering safe by default (#239, #273).
Adds `CMARK_OPT_UNSAFE` and make `CMARK_OPT_SAFE` a no-op (for API
compatibility). The new default behavior is to suppress raw HTML and
potentially dangerous links. The `CMARK_OPT_UNSAFE` option has to be set
explicitly to prevent this.
**NOTE:** This change will require modifications in bindings for cmark
and in most libraries and programs that use cmark.
Borrows heavily from @kivikakk's patch in github/cmark-gfm#123.
* Add sourcepos info for inlines (Yuki Izumi).
* Disallow more than 32 nested balanced parens in a link (Yuki Izumi).
* Resolve link references before creating setext header.
A setext header line after a link reference should not
create a header, according to the spec.
* commonmark renderer: improve escaping.
URL-escape special characters when escape mode is URL, and not otherwise.
Entity-escape control characters (< 0x20) in non-literal escape modes.
* render: only emit actual newline when escape mode is LITERAL.
For markdown content, e.g., in other contexts we want some
kind of escaping, not a literal newline.
* Update code span normalization to conform with spec change.
* Allow empty `<>` link destination in reference link.
* Remove leftover includes of `memory.h` (#290).
* A link destination can't start with `<` unless it is
an angle-bracket link that also ends with `>` (#289).
(If your URL really starts with `<`, URL-escape it.)
* Allow internal delimiter runs to match if both have lengths that are
multiples of 3. See commonmark/commonmark#528.
* Include `references.h` in `parser.h` (#287). (forwarded request 721248 from mimi_vx)