message: range: Add an implementation of as_range taking 2 iterators.
diff: @@ -40,7 +40,7 @@ namespace elle
  }
  }
  - /// Turn a pair of iterator into a for-loop compatible range.
  + /// Turn a pair of iterators into a for-loop compatible range.
  ///
  /// Especially useful with the return type of std::equal_range.
  template <typename It>
  @@ -49,4 +49,12 @@ namespace elle
  {
  return {p.first, p.second};
  }
  +
  + /// Turn two iterators into a for-loop compatible range.
  + template <typename It>
  + detail::range<It>
  + as_range(It begin, It end)
  + {
  + return {begin, end};
  + }
  }
  