- Allow keywords to be used unquoted as search terms.

	- Allow keywords to be used unquoted as search terms.
	- Add support for serverChoiceRelation (scr).
	- Add support for prefix-mapping, as in
		>dc="http://dublincore.org/ dc.title=fish
	  and
		>"http://dublincore.org/ title=fish
	  ### But the XCQL output may need to be changed depending on
	      the result of the ZNG list's deliberations.
	- Move the README file's old "THINGS TO DO" section to the end
	  of this file, the new "Still to do" section.