ghc-splitmix-0.0.4-bp153.1.20

- Update splitmix to version 0.0.4.
  - Add `bitmaskWithRejection32'` and `bitmaskWithRejection64'`
    which generate numbers in closed range `[0, n]`.
  - Unticked variants generate in closed-open range `[0, n)`.

- Drop obsolete group attributes.

- Update splitmix to version 0.0.3.
  - Add `System.Random.SplitMix32` module
  - Add `bitmaskWithRejection32` and `bitmaskWithRejection64` module
  - Add `nextWord32`, `nextTwoWord32` and `nextFloat`
  - Add `random` flag, dropping dependency on `random`
    (breaks things, e.g. `QuickCheck`, when disabled).

- Add splitmix at version 0.0.2.