+04Nov99=======================================================================
+1. Removed ~ from the end of the PC18.
+2. Removed a hangover from duff character checking in cluster.pl
+3. Stop PC frames that are to be routed, being routed back to themselves.
+03Nov99=======================================================================
+1. Simplified command caching so it uses anonymous subroutines, you should
+also get error messages back on the console now when developing.
+2. Allow locally connected AK1A clusters that for some obscure reason don't
+issue PC19s to still appear as connected and allow them to acquire users.
+31Oct99=======================================================================
+1. updated Minimuf.pm and show/muf.pl to the fixed versions sent to me by
+Steve Franke K9AN.
+2. Made set/badnodes work, added show/badnodes. This is an interim fix until
+input spot filtering works.
24Oct99=======================================================================
1. fixed announces so that nodes only get one of them (not two).
+2. Altered the select timeouts to prevent apparent excessive CPU usage on
+multiprocessor machines (or at least that is what seems to be the trouble
+here).
22Oct99=======================================================================
1. allow filter CALLSIGNS to be in upper or lower case.
2. create the concept of input and output filters, input filters are of the