2 - Directory authorities now use data collected from rephist when
3 choosing whether to assign the HSDir flag to relays, instead of
4 trusting the uptime value the relay reports in its descriptor.
5 This helps prevent an attack where a small set of nodes with
6 frequently-changing identity keys can blackhole a hidden service.
7 (Only authorities need upgrade; others will be fine once they do.)
8 Bugfix on 0.2.0.10-alpha; fixes bug 2709.