parse_color: recognize "no$foo" to clear the $foo attribute

diff --git a/RelNotes b/RelNotes
index a2b8043c8348d785ce3550a9109b785906f370b0..192f48cc9470b11e01edda4f0a84a257480ca96c 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.6.3.txt
\ No newline at end of file
+Documentation/RelNotes/2.1.3.txt
\ No newline at end of file