Remove $-cookies that have been misleading since roundup moved off CVS. One of these, a $Date$ cookie, might accidentally expanded correctly by Subversion *if* keyword expansion was enabled on that file; but judging by the ancientness of the date, it probably wasn't. In any case, git doesn't do any keyword expansion at all, so there isn't an equivalent to translate these into.

--- a/doc/implementation.txt	Fri Oct 21 15:15:06 2011 +1100
+++ b/doc/implementation.txt	Mon Oct 31 17:48:11 2011 -0400
@@ -2,8 +2,6 @@
 Implementation notes
 ====================
 
-:Version: $Revision: 1.6 $
-
 [see also the roundup package docstring]
 
 There have been some modifications to the spec. I've marked these in the