Bunker Punk 0.9.6 - More level variety and balance improvements

Release Notes for Bunker Punks ver. 0.9.6 As we get closer to the full release for Bunker Punks (release date will be announced early next week), this update focuses on balance, playability and bug fixes. Changes: - Added some new room design variants, increased the chances of them being used and made the early levels have more variety. This will add a lot more variation to every play through and make the early levels more engaging to new and experienced players alike. - Removed some room weaker design variants from the pool. - Improved the feel of movement while using a game controller. - Reduced the spread on Shotguns so that they are more useful for shooting flying enemies. - Rebalanced the Rocket Launcher so that it has less ammo, but does more damage in a smaller AoE. Bug Fixes: - Fixed an exploit where the player could switch weapons while a weapon buff ability/ultra was active.