Fixed Link's Movement (Description)

Sorry guys, this is an extra sync that adds nothing (though it does take
out an unnecessary comment line) just because I forgot to add the
description in the last one.

- I made a fix that covers the input sequence that caused link to stop
moving. The correct sequence which induced the bug was direction, second
direction, lift second direction (ex: press left, press right, lift
right). That is why yours was working chris. I tested the wrong
sequence.

- I fixed it by adding variable to the Player class that record when a
certain button is pressed. This was at TA Ben's suggestion. Instead of
using these to control link however (which we should consider), I used
them to set link back to the correct direction after a button lift. The
result is a lot of code and kind of ugly, but it gets the job done. Link
no longer has any movement bugs (to my knowledge) and we can move on
from that.