[Zope-Annce] ZODB 3.3 release candidate 1 released

[Tim Peters]

I'm pleased to announce the release of ZODB 3.3c1.  This corresponds to the
ZODB (and ZEO) that we intend to ship with ZopeX3-3.0.0 release candidate 1.

You can download a source tarball or Windows installer from:

    http://zope.org/Products/ZODB3.3

3.3c1 incorporates a slew of small fixes, and one major incompatibility:
when a transaction commit fails, all previous versions of ZODB aborted the
transaction and implicitly began a new transaction.  As discussed on the
zope-dev and zodb-dev mailing lists, that can be damaging if one in a
sequence of subtransaction commits mistakenly suppresses a commit exception.
Starting with ZODB 3.3c1, after a commit fails subsequent attempts to
commit, join or register with the transaction will also fail.  The failing
transaction must instead be explicitly discarded.  See the news file for
details:

    http://zope.org/Products/ZODB3.3/NEWS.html

The intent is that 3.3c1 will be released again as ZODB 3.3 (final) shortly
before the ZopeX3-3.0.0 final release.

Note that ZODB 3.3 does not support any version of Zope 2.6 or 2.7.