- Updating blobs in save points could cause spurious "invalidations
  out of order" errors.  https://bugs.launchpad.net/zodb/+bug/509801

(Thanks to Christian Zagrodnick for chasing this down.)

- BTree sets and tree sets didn't correctly check values passed to
  update or to constructors, causing Python to exit under certain
  circumstances.

cause a ZEO server to stop accepting connections, due to a failure
to catch errors in the initial part of the connection process.

The failure to properly handle exceptions while accepting
connections is potentially problematic on other platforms.

Fixes: https://bugs.launchpad.net/zodb/+bug/135108

https://bugs.launchpad.net/zodb/+bug/435547

set object state when objects implemented _p_invalidate methods
that reloaded ther state (unghostifiable objects).

https://bugs.launchpad.net/zodb/+bug/428039

set object state when objects implemented _p_invalidate methods
that reloaded ther state (unghostifiable objects).

https://bugs.launchpad.net/zodb/+bug/428039

install and use the mkzeoinstance script. :)

optimized Python. :(

Added back the second test condition, otherwise the test wasn't failing on some platforms without the actual code change

https://bugs.launchpad.net/zodb/+bug/533015

Much thanks to Hanno Schlichting and Nikolay Kim for coming up with
the patch.

See https://bugs.launchpad.net/zodb/+bug/459889

A ZEO threading bug could cause transactions to read inconsistent
  data.  (This sometimes caused an AssertionError in
  Connection._setstate_noncurrent.)

passed a tid older than anything in changes but newer than
anything in base.

test into an automated test, and included Chris Wither's repozo fix
(as monified by Godefroid Chapelle) to avoid a deprecation warning.

Bug fixed:
- Internal ZEO errors were logged at the INFO level, rather
  than at the error level.

- zope.testing was an unnecessary non-testing dependency.

105888 when there is an adequate test.  This can be achived through a
pretty straightforward conversion of the existing manual repozo test
to an automated test.

Fix bug where storages that still supported versions had the size parameter pass by zeo as the version parameter to their history method.

  2 BTree bugs, introduced by a bug fix in 3.9.0c2, sometimes caused
  deletion of keys to be improperly handled, resulting in data being
  available via iteraation but not item access.