Some fields for the PacketPlayOutPosition packet for 1.7 clients are set incorrectly. (de.gerrygames.viarewind.protocol.protocol1_7_6_10to1_8.packets.PlayerPackets)

Currently, the Y position is offset by 1.621, but it should actually be offset by 1.6200000047683716.

Also, the ground flag should always be set to false as per vanilla server behavior.

The anticheat community would greatly appreciate these changes. Thank you.