these parts seems reliable enough for now

from lobby, always
from game, if game is empty

since resize and bounds checks work (for a whole while) now
it is not necessary anymore to assume an arbitrary default size

use to keep track of:
present players and order in lobby
connection status in game

windowSizeLoop does not access any variables that are altered during a
reconnect. therefore it can continue to run uninterrupted

keepalive takes care of terminating stale connections so we do not have to
implement a ping loop.

inputloop now accesses player reference. no input loop for a player
must be running when that player is being modified

update may come before first wait. ignore if
we woke up from a timeout or not. always check
if a resize is necessary.

no more crashes on too small windows, also now utilizing full screen.
but scrolling is now horribly slow on large screens

rate limit input, end game if not able to keep up

telnet sometimes sends nullbytes as part of end of line
those don't really map to a key being pressed so we don't care

lobby stub allow a hardcoded player to 'reconnect' into the single running game