message: Fix CHANGELOG generation to list by PR merged date, not created date
diff: @@ -63,7 +63,7 @@ def make_release(version):
  raise Exception("could not clone github repo")
  # generate changelog
  - proc = subprocess.Popen(['gh', "search", "prs", "--repo", "wasmerio/wasmer", "--merged", "--limit", "100"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  + proc = subprocess.Popen(['gh', "search", "prs", "--repo", "wasmerio/wasmer", "--merged", "--limit", "100", "--sort", "updated"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  proc.wait()
  if proc.returncode != 0:
  print(proc.stdout)
  @@ -120,7 +120,7 @@ def make_release(version):
  for l in changelog:
  print(" " + l)
  - proc = subprocess.Popen(['gh','search', "prs", "--repo", "wasmerio/wasmer", "--merged"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  + proc = subprocess.Popen(['gh','search', "prs", "--repo", "wasmerio/wasmer", "--merged", "--sort", "updated"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  proc.wait()
  already_released_str = ""
  @@ -170,7 +170,7 @@ def make_release(version):
  print(line.rstrip())
  raise Exception("could not run git checkout -b release-" + RELEASE_VERSION)
  - replace(temp_dir.name + "/CHANGELOG.md", "## **Unreleased**", "\r\n".join(changelog))
  + replace(temp_dir.name + "/CHANGELOG.md", "## **Unreleased**", "\n".join(changelog))
  proc = subprocess.Popen(['git','commit', "-am", "Update CHANGELOG"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  proc.wait()
  @@ -338,7 +338,7 @@ def make_release(version):
  print(line.rstrip())
  raise Exception("could not pull origin ")
  - proc = subprocess.Popen(['gh','search', "prs", "--repo", "wasmerio/wasmer", "--merged"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  + proc = subprocess.Popen(['gh','search', "prs", "--repo", "wasmerio/wasmer", "--merged", "--sort", "updated"], stdout = subprocess.PIPE, cwd = temp_dir.name)
  proc.wait()
  github_link_line = ""
  