[ANN] kramdown 1.13.1 released

[Thomas Leitner]

## About kramdown

kramdown (sic, not Kramdown or KramDown, just kramdown) is a *free*
MIT-licensed [Ruby](http://www.ruby-lang.org) library for parsing a
superset of Markdown.

It is completely written in Ruby, supports standard Markdown (with some
minor modifications) and various extensions that have been made popular
by the PHP Markdown Extra package and Maruku.

Homepage for installation instructions and documentation:
http://kramdown.gettalong.org


## kramdown 1.13.1 released

This release fixes the GFM header ID generation for more cases,
updating is *very* recommended.

## Changes

* 1 bug fix:

- Fix GFM header ID generation when code spans, math elements,
entities, typographic symbols or smart quotes are used (fixes [#391]
reported by Nick Fagerlund)

[#391]: https://github.com/gettalong/kramdown/issues/391


Cheers,
Thomas