Changed `parameterize()` to always convert string keys to expanded-name tuple. Updated `paramvalue()` to accept sequences of all strings (converted to text nodes).
Changed `parameterize()` to always convert string keys to expanded-name tuple.
Updated `paramvalue()` to accept sequences of all strings (converted to text nodes).

zepheira/amara,zepheira/amara,zepheira/amara,zepheira/amara,zepheira/amara,zepheira/amara