Move lexical variables in regexes to the completed section of the ROA…

…DMAP.

docs/ROADMAP

@@ -25,7 +25,6 @@ Really important items
 1 **    complete lazy lists in Seq and Array (colomon, bkeeler, jnthn, pmichaud, others)
 1 *     array/hash vivification (masak, jnthn, pmichaud)
 1 ***   REPL remembers the variable from the last line (D, jnthn)
-1 *     lexical variables in regexes (B, bkeeler, masak, jnthn)
 1 **    operator overloading -- infix:, prefix:, postfix: (almost there, problems with pre-comp)
 1 **    import module symbols into current lexical scope (D, jnthn)
 1 **    improved error messages and failure modes (B, all)
@@ -116,3 +115,4 @@ Completed ROADMAP items:
   - protoregexes in grammars (done)
   - item assignment (done)
   - lexical classes and roles (done)
+  - lexical variables in regexes (done)