added some additional notes to the 2.0.0 update notes to highlight some of the potential gotchas, fixes #588
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 906e2eb..bbf2ec7 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -323,6 +323,8 @@
 -  Fixed a bug (Reactor #69) where the SHA1 library was named
    incorrectly.
 
+.. _2.0.0-changelog:
+
 Version 2.0.0
 =============