Update TODO; clean up code

TODO.md

@@ -4,6 +4,8 @@
 * network
   * test tls!
   * handle tls certificate parse errors etc better
+    * parse once only
+    * exit with error message, not with panic
   * send/recv buffer size config
   * limit ws message sizes?
 * test

aquatic_ws/src/lib/network/mod.rs

@@ -135,7 +135,6 @@ fn accept_new_streams(
 }
 
 
-
 /// On the stream given by poll_token, get TLS (if requested) and tungstenite
 /// up and running, then read messages and pass on through channel.
 pub fn run_handshakes_and_read_messages(