mempool: reserve IDs in InitPeer instead of AddPeer

p2p: limit the number of incoming connections

to p2p.max_num_inbound_peers + len(p2p.unconditional_peer_ids)

update changelog and version

changelog: fix grammar

UnconditionalPeerIDs do not exist in v0.31

node/node.go

@@ -407,6 +407,11 @@ func createTransport(config *cfg.Config, nodeInfo p2p.NodeInfo, nodeKey *p2p.Nod
 	}
 
 	p2p.MultiplexTransportConnFilters(connFilters...)(transport)
+
+	// Limit the number of incoming connections.
+	max := config.P2P.MaxNumInboundPeers
+	p2p.MultiplexTransportMaxIncomingConnections(max)(transport)
+
 	return transport, peerFilters
 }