Update packages/yasnippet by subtree-merging from its github-based upstream

[gnu-emacs-elpa] / packages / yasnippet / snippets / nxml-mode / style

# contributor: Anders Bach Nielsen <abachn@abachn.net>
# name: <style type="text/css" media="...">...</style>
# key: style
# --
<style type="text/css" media="${1:screen}">
  $0
</style>