* anders/diameter/18/dialyzer/OTP-13400:
  Fix dialyzer warnings

* anders/diameter/18.3/OTP-13322:
  vsn -> 1.11.2
  Update appup for 18.3

Whether making record declarations unreadable to compensate for
dialyzer's ignorance of match specs is worth it is truly debatable.

* anders/diameter/retransmission/OTP-13342:
  Fix handling of shared peer connections in watchdog state SUSPECT
  Remove unnecessary parentheses
  Remove dead export

OTP-13164 more efficient peer lookup
OTP-13342 remote watchdog transition into state SUSPECT

A peer connection shared from a remote node was regarded as being
available for peer selection (aka up) as long as its peer_fsm process
was alive; that is, for the lifetime of the peer connection. In
particular, it didn't take note of transitions into watchdog state
SUSPECT, when the connection remains. As a result, retransmissions could
select the same peer connection whose watchdog transition caused the
retransmission.

A service process now broadcasts a peer_down event just as it
does a peer_up event.

The fault predates the table rearrangements of commit 8fd4e5f4.

Not needed as of commit 6c9cbd96.

The export of diameter_traffic:failover/1 happened with the creation of
the module in commit e49e7acc, but was never needed since the calling
code was also moved into diameter_traffic.