Include the ChangeLog.md file in the next release.
diff --git a/MANIFEST.in b/MANIFEST.in
index 824cda4..581e4de 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,5 +3,6 @@
 include README.md
 include LICENSE
 include CONTRIBUTING.md
+include ChangeLog.md
 include setup.py
 include test.sh