Update LICENSE
Add std::equal_to <void>, std::equal, c++14 compatibility
Remove deprecated IPAddress
Add aged associative container based classes:
* aged_set
* aged_map
* aged_multiset
* aged_multimap
PeerFinder fixes:
* Fix split horizon using recent address cache
* Change message tuning parameters to reduce dead messages
* Improved handout algorithm for addresses
* Faster autoconnection strategy
* Consolidate deadline timers
* Send empty endpoints message as a socket ping
* Fix hop count adjustments for live cache filtering