+1.4 [IN PROGRESS]
+ - Add support for interpreting sequences of non-keywords as a
+ single multi-word term rather than a broken INDEX RELATION
+ TERM triplet. This means that "oxford street" is a valid
+ query rather than a syntax error, and "tottenham court road"
+ is what it looks like rather than a search for the word
+ "court" related by the relation "court" to the index
+ "tottenham". Note that the word-formed relations "all" and
+ "exact" (### and others?) are still treated specially.
+ ### Not yet done
+