Reusable Rockets

This mod adds three tiers of reusable rockets.    ## Features - Three different tiers of rockets - Dynamic flight duration - Only requires gunpowder to refuel - Can only be used for elytra boosting ## Reusable Rocket Tier 1 - Can store up to 32 uses - Maximum flight duration of 2 ## Reusable Rocket Tier 2 - Can store up to 64 uses - Maximum flight duration of 4 ## Reusable Rocket Tier 3 - Can store up to 128 uses - Maximum flight duration of 6