Added methods to check for escrow duration for both sent and received trade offers
Added methods to check for escrow duration for both sent and received trade offers

fjch1997/SteamBot,BlueRaja/SteamBot,MattrAus/SteamBot,novasdream/SteamBot,MattrAus/SteamBot,Jessecar96/SteamBot,novasdream/SteamBot,tarun200897/SteamBot,icodingforfood/SteamBot,wqbill/SteamBot,icodingforfood/SteamBot,fjch1997/SteamBot,wqbill/SteamBot,terryhau/SteamBot,tarun200897/SteamBot,terryhau/SteamBot