Log Message:
Update ruby-haml package to 3.1.2.

3.1.1

* Update the vendored Sass to version 3.1.0.

3.1.0

* Don't add a type attribute to <script> and <style> tags generated by
  filters when :format is set to :html5.

* Add an :escape_attrs option that allows attributes to either remain
  unescaped (for things like embedding PHP directives in Haml) or to be always
  escaped rather than #escape_onced. This can also be used from the command
  line via --no-escape-attrs.

* Allow custom filters to be loaded from the command line.

Backwards Incompatibilities - Must Read!

* Get rid of the --rails flag for the haml executable. This flag hasn't been
  necessary since Rails 2.0. Existing Rails 2.0 installations will continue to
  work.

* Drop support for Hpricot 0.7. 0.8 has been out for nearly two years.

3.0.25

Tagged on GitHub.

* HTML-to-Haml conversion now works within Ruby even if Hpricot is loaded
  before haml/html.