upgrade to 1.0.20 and update changelog

Author: stevehu

CHANGELOG.md

@@ -9,6 +9,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 
+## 1.0.20 - 2019-09-10
+
+### Added
+
+### Changed
+
+- fixes #183 Validation error when field is nullable and consumer sends in a null value. Thanks @ddobrin
+- fixes #185 Validation issue in oneOf when elements have optional fields. Thanks @ddobrin
+
 ## 1.0.19 - 2019-08-13
 
 ### Added

README.md

@@ -51,7 +51,7 @@ Add the following to your `pom.xml`:
 <dependency>
     <groupId>com.networknt</groupId>
     <artifactId>json-schema-validator</artifactId>
-    <version>1.0.19</version>
+    <version>1.0.20</version>
 </dependency>
 ```
 

pom.xml

@@ -19,7 +19,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.networknt</groupId>
     <artifactId>json-schema-validator</artifactId>
-    <version>1.0.19</version>
+    <version>1.0.20</version>
     <packaging>bundle</packaging>
     <description>A json schema validator that supports draft v4</description>
     <url>https://github.com/networknt/json-schema-validator</url>