release core lib 1.2.0 (#18)

Author: kaibocai

azure-functions-java-core-library/pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.microsoft.azure.functions</groupId>
     <artifactId>azure-functions-java-core-library</artifactId>
-    <version>1.1.0</version>
+    <version>1.2.0</version>
     <packaging>jar</packaging>
     <parent>
         <groupId>com.microsoft.maven</groupId>