Explain the lab directory

nedbat · nedbat · commit 7a099a2204e6 · 2018-06-26T06:49:36.000-04:00
diff --git a/lab/README.txt b/lab/README.txt
@@ -0,0 +1,4 @@
+The lab directory is not part of the installed coverage.py code.  These programs
+are tools I have used while diagnosing problems, investigating functionality,
+and so on.  They are not guaranteed to work, or to be suitable for any given
+purpose.  If you find them useful, enjoy!
