Blaster Rate-of-Fire Upgrade

This upgrade actually has several effects: The maximum level for this upgrade is level 8.
 * 1) Increases the rate-of-fire of the blaster
 * 2) Increases the rate at which you fire torpedoes - but you are still limited by torpedo capacity and recharge rate
 * 3) Increases the charge rate of your starting weapon which lets you fire charged shots and decreases the cooldown  time needed to get back up to its maximum firing rate