Add aged_set
Fix PeerFinder split horizon with recent addr cache
[WIP] aged_set generalization
[FOLD] broken SFINAE
[FOLD] compiling SFINAE
[FOLD] fix gcc
[FOLD] broke
[FOLD] emplace broke
[FOLD] crash msvc compiler
[FOLD] tweak emplace
[FOLD] fixed
[FOLD] multiset insertion
[FOLD] multiset
[FOLD] work on map
[FOLD] tidy up access control
[FOLD] map work
[FOLD] fix at
[FOLD] add todo
[FOLD] refine observers
[WIP] Insert test harness