changed up the net table a bit and added pack/unpack
doesn't do anything more than make a string with values separated by a \n
i was originally going to do spaces but this allows for strings with spaces in them to be sent,
for if i want to do like a chat or something, or even just player names
and of course i won't allow people to have newlines in whatever string they input
changed how map loading works and fixed a couple bugs with it
added a convenient "matches to table" function
handling disconnects a little better
changed the group class a bit