message: operator++/-- for Enoki arrays
diff: @@ -207,6 +207,28 @@ template <typename Value_, bool IsMask_, typename Derived_> struct ArrayBase {
  return CallSupport(derived());
  }
  + Derived& operator++() {
  + derived() += 1;
  + return derived();
  + }
  +
  + Derived& operator--() {
  + derived() -= 1;
  + return derived();
  + }
  +
  + Derived operator++(int) const {
  + Derived value = derived();
  + derived() += 1;
  + return value;
  + }
  +
  + Derived operator--(int) const {
  + Derived value = derived();
  + derived() -= 1;
  + return value;
  + }
  +
  //! @}
  // -----------------------------------------------------------------------
  