Propagate port_t.
Minor simplifications.
Get rid of some additional libev stuff.
Do not repeatedly try to link existing nodes.
Minor simplifications, part two.
Chainable slot binding.
Consistent component naming.
Fixed a couple of typos left from renaming.
Fixed compilation paths for Raft.
Fixed build errors from GCC 4.6.

GCC 4.6 doesn't have std::map<K, V>::emplace() function. Wow.
Bumped up the required Boost version.