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+ o Minor bugfixes:
+   - Simplify the logic that causes us to decide if the network is unavailable
+     for purposes of recording circuit build times. If we receive no cells
+     whatsoever for the entire duration of a circuit's full measured lifetime,
+     the network is probably down. This should hopefully reduce some of the
+     cases where we see ridiculous circuit build timeouts for people with spotty
+     wireless connections. Fixes bug 1772; bugfix on 0.2.2.2-alpha.
+   - Prevent the circuit build timeout from becoming larger than the maximum
+     build time we have ever seen. Also, prevent the measurement time period
+     from becoming larger than twice that value. Fixes bug 1772; bugfix on
+     0.2.2.2-alpha