2 - Do even more to reject (and not just ignore) annotations on
3 router descriptors received anywhere but from the cache.
4 Previously we would ignore such annotations at first, but cache
5 them to disk anyway. Bugfix on 0.2.0.8-alpha. Found by piebeer.
8 - Enforce multiplicity rules when parsing annotations. Bugfix on
9 0.2.0.8-alpha. Found by piebeer.