Sometimes you encounter peers with lots of addresses. When this happens
you can attach more than 10x event listeners to the abort signal we
use to abort all the dials - this causes node to print a warning
which is misleading.
This PR increases the default number of listeners on the signal.
Fixes#900
BREAKING CHANGES:
top level types were updated, multiaddr@9.0.0 is used, dialer and keychain internal property names changed and connectionManager minPeers is not supported anymore
