Minor Adjustment Update

Hi fellow sperms, there were some in-game issues that you might be encountering. So, we would like to add some fixes to improve your swimming experience. [list] [*] Adjusted swim movement, slightly easier to turn/move around the level [*] Some sperm cells seems more possible to collect [*] Fixed some obstacles placement that might get you stuck [*] Arrow indicator displays when the door is opened [*] Tail physics adjustment [*] Fixed sensitivity adjustment [/list]