Resend because: on server restarts the server will lose the stage and costume information.
If only one client is connected to the server, the packets currently aren't resent, so the server doesn't know in which stage the client is and what
costume it wears
(which I'd like to display on the website).
With more then one client connected it already works, because when another client joins the server, the client will send both packets.
- sizeof(bool) is implementation defined. The server assumes it's 4 but for me it was 1 (tested with Release too) which caused some bugs
- Structs aren't guaranteed to be packed. The compiler is free to change the layout, which we wouldn't want to for the Packet structs that we deserialize on the server.
