Release 4.4.10

The major new feature of this release is better VACM implementation. Specifically:

• Added subtree match negation support (vacmViewTreeFamilyType)
• Added subtree family mask support (vacmViewTreeFamilyMask)
• Added prefix content name matching support (vacmAccessContextMatch)
• Added key VACM tables caching for better isAccessAllowed lookup performance

One depreciation update:

• Rebased MIB importing code onto importlib because imp is long
  deprecated

And, of course, a handful of fixes:

• Fixed asyncore main loop to respect non-default timer resolution
• Fixed .setTimerResolution() behaviour of abstract main loop dispatcher
  to update call intervals of the existing periodic dispatcher jobs
• Received MIB objects resolution made more forgiving to errors, added
  optional ignoreErrors parameter to ObjectType.resolveWithMib() to
  control that behaviour.
• Fixed var-bindings initialization to prevent pyasn1 encoder failures
  with newer pyasn1 versions where SequenceOf type looses its default
  initializer.
• Fixed crash on uninitialized component serialization left out in
  SNMP v1 TRAP PDU to SNMPv2/3 TRAP PDU proxy translation routine.

Please refer to the change log for complete list of changes.