Prepare relaase 0.2.0-a1

Author: piotrszul

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>au.csiro.aehrc.variant-spark</groupId>
 	<artifactId>variant-spark_2.11</artifactId>
-	<version>0.2.0-SNAPSHOT</version>
+	<version>0.2.0-a1</version>
 	<packaging>jar</packaging>
 
 	<name>variant-spark</name>

python/setup.py

@@ -14,7 +14,7 @@
 
 in_src = os.path.isfile(os.path.join(ROOT_DIR, "pom.xml"))
 
-VERSION = '0.2.0a0'    
+VERSION = '0.2.0a1'    
 
 # Provide guidance about how to use setup.py
 incorrect_invocation_message = """