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							-   o Minor features (infrastructure):
 
-     - Tor now includes an improved timer backend, so that we can efficiently
 
-       support tens or hundreds of thousands of concurrent timers, as will be
 
-       needed for some of our planned anti-traffic-analysis work. This code
 
-       is based on William Ahern's "timeout.c" project, which implements
 
-       a "tickless hierarchical timing wheel". Closes ticket #18365.
 
 
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