python: Replace the image crate with png We weren’t using any of its features anyway, so the png crate is exactly what we need, without the many heavy dependencies of image. https://github.com/image-rs/image-png/pull/670 will eventually make it even faster to build.

from pytouhou.game.effect cimport Effect
from pytouhou.utils.interpolator cimport Interpolator

cdef class Particle(Effect):
    cdef long frame, duration
    cdef Interpolator pos_interpolator

    cpdef update(self)