Bukkit

• Re-added rocket launcher
• Re-added flamethrower
• Added a sniper rifle
• Added grenades
• Fixed a number of bugs with jetpacks

This is only a pre-release, and lacks some items from v1.20. Don't worry, they'll be there in the final release!

• mw.*, mw.use.* and mw.craft.* permissions might not include the grenade permissions, so it's recommended to give mw.use.grenade.* and mw.craft.grenade.* as well
• it has been reported that commands conflict with the multiworld commands, so it's currently recomended to use other similar plugins (I'm probably going to change the commands in the next version)