Billion Beat Bug Fix #15

This update fixes the following issues: [list] [*] Fixes a bug where Li'l Zellies, the flying robots seen in the 10th fight, no longer update when the game is paused (for real this time). [*] Fixes an issue where the first time beating a Tournament would always reward an S-Rank because the first time bonus was factored into the ranking calculation. [*] Fixes an issue in which the Beat Arcade Mode achievement would unlock on Normal and even if the player lost some matches. [*] Removes the irrelevant Easy Mode tab from the High Score screen (it's not possible to play Arcade Mode on Easy.) [/list] This brings the version of the game up to [b]01.00.03[/b].