Introducing explicit type for implicit digest component

Change-Id: Ib2cd9a986a6b8835b0217c10aba62dbb30fc8bbc
Refs: #2011
diff --git a/conf.py b/conf.py
index 1e55a67..1d987ce 100644
--- a/conf.py
+++ b/conf.py
@@ -50,7 +50,7 @@
 # The short X.Y version.
 version = '0.2'
 # The full version, including alpha/beta/rc tags.
-release = '0.2-alpha-1'
+release = '0.2-alpha-2'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.