datamapper/dm-types — pull request #50 by mbj (2011-12-07 19:28:14+00:00)
Title: Fix syck cannot dump DirtyMinded Strings

The fix excludes Strings from be extended by the Hooker.

This affects ruby-1.8.7 and ruby-1.9.2 (when using syck), both master and dm-1.2.0.