v1.41-rc1

fix: fix sorting algorithm - crashed the debug versions (#26)

- Fixed: 2 equal values could return true (sorting algorithms require that 2
  equal values return false). This caused a assertion error in debug builds and
  thus a crash.
- Fixed: testing equality of floats with zero.
- Simplified a test:
  knowing that dl > 0 and dr > 0,
  (cl * cr < 0) ? (cl > cr) : (dl * cr < dr * cl)
  is equivalent to:
  (dl * cr < dr * cl)