Compared to version 1.1, this new version adds support for normalizing local URLs pointing to attachments. It also fixes several bugs, see http://extensions.xwiki.org/xwiki/bin/view/Extension/WikiLinkURLNormalizer/#HReleaseNotes for details.
Example:
[[label>>http://localhost:8080/xwiki/bin/download/A/B/image.png]]
Gets normalized into:
[[label>>attach:A.B@image.png]]