Release 4.4.12

Release 4.4.11

Make received MIB objects resolution more forgiving

Previously, MIB resolution errors were ignored (whenever possible)
for objects we were sending and receiving. This change tightens
outgoing objects MIB compliance (send will fail), but tolerate
non quite compliant objects we receive.

Also, extend the same policy onto `NotificationOriginator`.

Release 4.4.9

Release 4.4.8

Release 4.4.7

Release 4.4.6

Fix Python 2.4-2.5 except statement

Older Pythons do not support 'except ... as...' syntax.

copyright notice extended

minor fixes to the docs