*   ResourceVariable's gather op supports batch dimensions.
    *   ResourceVariable support for `gather_nd`.
    *   `ResourceVariable` and `Variable` no longer accepts `constraint` in the
        constructor, nor expose it as a @property.
    *   Added gradient for `SparseToDense` op.
    *   Expose a flag that allows the number of threads to vary across Python
        benchmarks.

0FC6          ; valid                                  # 3.0  TIBETAN SYMBOL PADMA GDAN
0FC7..0FCC    ; valid                  ;      ; NV8    # 3.0  TIBETAN SYMBOL RDO RJE RGYA GRAM..TIBETAN SYMBOL NOR BU BZHI -KHYIL
0FCD          ; disallowed                             # NA   <reserved-0FCD>
0FCE          ; valid                  ;      ; NV8    # 5.1  TIBETAN SIGN RDEL NAG RDEL DKAR

bits at a time and need to finish at -1, so -1 + 5 * 51 = 254. index := 254 sel, sign := boothW5(s.Rsh(index)) // sign is always zero because the boothW5 input here is at // most two bits long, so the top bit is never set. _ = sign // Neither Select nor Add have exceptions for the point at infinity / // selector zero, so we don't need to check for it here or in the loop. table := new(p256Table).Compute(q) table.Select(p, sel) t := NewP256Point() for index >= 4 { index -= 5 p.Double(p) p.Double(p) p.Double(p)...