v1.52 Update

These were suggestions and feedback by Ziero1986. - Training was improved and you can now choose any map from your library to train on. - Power meter now has marks to help shooting power. - Boosts were nerfed again. - Zoom keys for those who don't have mouse wheel are now added and can be changed in the game's initial dialog. - Aim line texture is now yellow to see better. - Partial controller support added. You can aim/shoot/respawn/zoom in out camera with a controller. Any problem with the game please report it.