A template plugin allowing the inclusion of ERB-enabled RBPDF template
files.

* Use UTF-8 encoding.
* RTL (Right-To-Left) languages support.
* HTML tag support.
* CSS minimum support.
* Image
 - 8bit PNG image support without MiniMagick/RMagick library.
 - PNG(with alpha channel)/JPEG/GIF image support. (use MiniMagick or
   RMagick library)