0x6F - Trade
------------
Client->Server:Yes
Server->Client:Yes
Length:dynamic

byte 0x6F
short size
byte type
	0x00 - Initiate
	0x01 - Cancel
	0x02 - Set Checkmark
uint tradingPlayerSerial

if type = 0x00:
	uint containerSerial1
	uint containerSerial2
	bool includeName

if includeName
	char[0x1E] playerName