v3.5.3

• run() now sets stderr to NULL in the result (instead of an empty
  string), if the standard error was redirected to the standard output.
  This also fixes an error when interrupting a run() with a redirected
  standard error.

• processx now does not fail if the current working directory contains
  a non-ASCII character on Windows, and getwd() returns a short path
  for it (#313).