1.2.1
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* Restore compatibility with Middleman 3.0.x series.

1.2.0
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* Support Kramdown as Markdown engine in addition to Redcarpet.
* Switch to Rouge from Pygments.rb
* Fix bugs around setting language options.

1.1.1
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* Properly merge language attribute for Markdown. #14

1.1.0
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* Avoid errors when language is empty. #9
* Allow passing options to Pygments. #5 & #7

1.0.1
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* Updated pygments.rb dependency.

1.0.0
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* Initial release, basic syntax highlighting.