Patch note 0.4.0

Addition of 1st anniversary customization Addition and modification of backstage Added a new rule that allows players to enter Sudden Death when time is up (can be turned on or off). Addition of practice mode Assist function for Nyambi operation added. Adjustment of Nyambi's behavior Changed the key layout for pad operation (step for LB and LT, jump for RB and RT, and threat for cross key). Change of various categories. Brushed up stages, objects, etc., and enhanced visuals by changing UI, effects, etc. Fundamental changes to the network system. The rating matches were temporarily closed. The maximum number of players for the trial matches was changed from 8 to 6. Other minor changes [img]https://static.wixstatic.com/media/4261e8_64f7aff85ddb4f8cad24a74596a4fe29~mv2.png/v1/fill/w_979,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/SS_Anniversary.png[/img]