Limit keywords for crates.io.
Limit keywords for crates.io.

antonpirker/Rocket,gsquire/Rocket,gsquire/Rocket,impowski/Rocket,gsquire/Rocket,impowski/Rocket,shssoichiro/Rocket,impowski/Rocket,shssoichiro/Rocket,antonpirker/Rocket,antonpirker/Rocket,shssoichiro/Rocket