formats: Update to ${concat(…)} to build on current nightly ${concat(…)} replaces the removed concat_idents!() macro, but doesn’t support being used in nested repetitions for now. We can remove the gen_match!() macro once this is supported again.

cdef class Animation:
    cdef public long version
    cdef public unicode first_name, secondary_name
    cdef public dict sprites, scripts
    cdef public object texture

    cdef double size_inv[2]