clarify that resumable/parallel uploads are supported but not defined in this pep

Author: ewdurbin

peps/pep-0694.rst

@@ -77,9 +77,11 @@ In addition, there are a number of major issues with the legacy API:
 * Creation of new projects requires the uploading of at least one file, leading to "stub" uploads
   to claim a project namespace.
 
-The new upload API proposed in this PEP solves all of these problems, providing for a much more
-flexible approach, with better error reporting, a better release testing
-experience, and atomic and simultaneous publishing of all release artifacts.
+The new upload API proposed in this PEP provides a solution to all of these problems,
+providing for a much more flexible approach, with support for servers to
+implement resumable and parallel uploads via mechanisms,
+better error reporting, better release testing experience,
+and atomic and simultaneous publishing of all release artifacts.
 
 
 Legacy API