Big email 3.0 API changes, with updated unit tests and documentation.
Briefly (from the NEWS file):

- Updates for the email package:
  + All deprecated APIs that in email 2.x issued warnings have been removed:
    _encoder argument to the MIMEText constructor, Message.add_payload(),
    Utils.dump_address_pair(), Utils.decode(), Utils.encode()
  + New deprecations: Generator.__call__(), Message.get_type(),
    Message.get_main_type(), Message.get_subtype(), the 'strict' argument to
    the Parser constructor.  These will be removed in email 3.1.
  + Support for Python earlier than 2.3 has been removed (see PEP 291).
  + All defect classes have been renamed to end in 'Defect'.
  + Some FeedParser fixes; also a MultipartInvariantViolationDefect will be
    added to messages that claim to be multipart but really aren't.
  + Updates to documentation.
diff --git a/Lib/email/quopriMIME.py b/Lib/email/quopriMIME.py
index 2802bc2..a9b5d49 100644
--- a/Lib/email/quopriMIME.py
+++ b/Lib/email/quopriMIME.py
@@ -1,5 +1,6 @@
 # Copyright (C) 2001-2004 Python Software Foundation
-# Author: che@debian.org (Ben Gertzfield)
+# Author: Ben Gertzfield
+# Contact: email-sig@python.org
 
 """Quoted-printable content transfer encoding per RFCs 2045-2047.
 
@@ -43,12 +44,12 @@
 # Helpers
 def header_quopri_check(c):
     """Return True if the character should be escaped with header quopri."""
-    return hqre.match(c) and True
+    return bool(hqre.match(c))
 
 
 def body_quopri_check(c):
     """Return True if the character should be escaped with body quopri."""
-    return bqre.match(c) and True
+    return bool(bqre.match(c))
 
 
 def header_quopri_len(s):