Version 2.3

This version adds a bunch of new document options that trigger boilerplate generation. See Document Options for more details.

Additionally, the caption attribute is deprecated in favor of a child emu-caption element.

Minor changes (including those in 2.2) include:

• Grammar line breaking behavior improvements (Toru Nagashima)
• TOC toggle style improvements (Michael Ficarra)
• Always set output charset to utf-8
• Minor bug fixes