feature enhancements

alpha fixes a huge client-side performance bug, as well
as laying the groundwork for further relay-side performance fixes. It
also starts cleaning up client behavior with respect to the EntryNodes,
ExitNodes, and StrictNodes config options.

This release also rotates two directory authority keys, due to a security
breach of some of the Torproject servers:
http://archives.seul.org/or/talk/Jan-2010/msg00161.html

Everybody should upgrade:
https://www.torproject.org/download.html.en

Changes in version 0.2.2.7-alpha - 2010-01-19
o Directory authority changes:
- Rotate keys (both v3 identity and relay identity) for moria1
and gabelmoo.

o Major features (performance):
- We were selecting our guards uniformly at random, and then weighting
which of our guards we'd use uniformly at random. This imbalance
meant that Tor clients were severely limited on throughput (and
probably latency too) by the first hop in their circuit. Now we read more »

Tor 0.2.1.18 lays the foundations for performance improvements, adds
status events to help users diagnose bootstrap problems, adds optional
authentication/authorization for hidden services, fixes a variety of
potential anonymity problems, and includes a huge pile of other features
and bug fixes.

Tor 0.2.1.19 fixes a major bug with accessing and providing hidden
services.

https://www.torproject.org/easy-download

Changes in version 0.2.1.19 - 2009-07-28
Major bugfixes:

• Make accessing hidden services on 0.2.1.x work right again.
  Bugfix on 0.2.1.3-alpha; workaround for bug 1038. Diagnosis and
  part of patch provided by "optimist".

Minor features:

• When a relay/bridge is writing out its identity key fingerprint to
  the "fingerprint" file and to its logs, write it without spaces. Now
  it will look like the fingerprints in our bridges documentation, read more »