Revert "Issue #5: wantzel can understand both '!' and '~' as a starting...

Revert "Issue #5: wantzel can understand both '!' and '~' as a starting command. Should remove the '!' later."

This reverts commit 683e6fda.

wantzel.py

@@ -223,7 +223,7 @@ class Wantzel(object):
             if "wantzel" in msg and ("help" in msg or "aide" in msg):
                 self.help(user, channel, msg)
             # Find known command
-            command = re.search("[!~](rp[acp]*|kill|help|stats|admin)", msg)
+            command = re.search("!(rp[acp]*|kill|help|stats|admin)", msg)
             Utils.debug("Command: %s" % command)
             if command:
                 Utils.debug("group(0): %s" % command.group(0))