TAL changes

  This file contains change information for the current release. 
  Change information for previous versions can be found in the
  file HISTORY.txt.

    Version 1.4.1

      Bugs Fixed

        - tal:on-error was mangling other attributes

        - TAL and METAL attributes with blank values were ignored.

        - METAL statement nesting was not enforced.

        - METAL expansion didn't always do the right thing to nested
          METAL attributes.
