Upgrade to RMR version 4.0.2

Bump version to 1.0.3 and add release notes
Add developer guide with guidance on bumping the version

Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>
Change-Id: If2fd64c1791c549c674c0779d58d2ac0d4cf1f72
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index 79cc239..3ae4794 100644
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -14,6 +14,11 @@
    :depth: 3
    :local:
 
+[1.0.3] - 2020-04-29
+--------------------
+* Upgrade to RMR version 4.0.2
+
+
 [1.0.2] - 2020-04-22
 --------------------
 * Upgrade to RMR version 3.8.0