PEP 669: Low Impact Monitoring for CPython (#2183)

Author: markshannon

.github/CODEOWNERS

@@ -524,6 +524,7 @@ pep-0665.rst  @brettcannon
 # pep-0666.txt
 pep-0667.rst  @markshannon
 pep-0668.rst  @dstufft
+pep-0669.rst  @markshannon
 pep-0670.rst  @vstinner @erlend-aasland
 pep-0671.rst  @rosuav
 pep-0672.rst  @encukou