Adding core word list.

ueforth/plan.txt

@@ -40,3 +40,17 @@ POSSIBLE PLAN
     * Build distributable js, boot files
 * Publish built downloadables to gh-pages
 * Support cross built by providing built binaries with others.
+
+CORE
+----
+
+0= 0< + UM/MOD */MOD 
+AND OR XOR
+DUP SWAP OVER DROP
+@ C@ ! C! FILL MOVE
+SP@ SP! RP@ RP! >R R> R@
+EXECUTE BRANCH 0BRANCH DONEXT DOLIT
+ALITERAL CELL
+FIND PARSE S>NUMBER?
+CREATE DOES> IMMEDIATE 'SYS
+: EVAL1 EXIT ;