2 - Stop trying to resolve our hostname so often (e.g. every time we
3 think about doing a directory fetch). Now we reuse the cached
4 answer in some cases. Fixes bugs 1992 (bugfix on 0.2.0.20-rc)
5 and 2410 (bugfix on 0.1.2.2-alpha).
8 - Make bridge relays check once a minute for whether their IP
9 address has changed, rather than only every 15 minutes. Resolves