Update TODO

TODO.md

@@ -5,6 +5,7 @@
 * use ipv4-mapped address functions, but I should check that they really
   work as they really work as they should. All announces over ipv4 should
   go to ipv4 map, all over ipv6 to ipv6 map
+* init logging in cli helper crate?
 
 ## aquatic_http_load_test
 
@@ -29,12 +30,12 @@
   write actually block here? And what action should be taken then?
 
 ## aquatic_ws
+* test transfer again with crossbeam-channel
 * is 'key' sent in announce request? if so, maybe handle it like in
   aquatic_http (including ip uniqueness part of peer map key)
 * established connections do not get valid_until updated, I think?
 * tests
 * use enum as return type for handshake machine
-* use crossbeam instead of flume (improved performance in aquatic_http)
 * ipv4 and ipv6 state split: think about this more..
 
 ## aquatic_udp