Add . to acceptable class characters (see #97)
Merge image enhancements. (See #100 and #101)
Update the changelog and the branches section of the readme file
Merge docblock updates from gocom/textile - thanks Jukka
Fix some minor code spacing issues
Change responsive_images to dimensionless_images
Update test case for dimensionless images
Bump version number to v3.5.1
Update changelog
Update changelog to reflect method name change
Improved support for Redcloth-style definition lists

* Allow linebreaks in redcloth def. list terms
* Allow redcloth def lists with multiple terms
* Add more tests for rc-style definition lists
* Update changelog
Bugfix: correctly render rel attributes. Closes #103. Thank you @xorock.