fixes #80 upgrade to jackson 2.9.5 and undertow 1.4.20.Final

Author: stevehu

pom.xml

@@ -61,14 +61,14 @@
         <java.version>1.6</java.version>
         <java.testversion>1.7</java.testversion>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <version.jackson>2.8.7</version.jackson>
+        <version.jackson>2.9.5</version.jackson>
         <version.slf4j>1.7.25</version.slf4j>
         <version.common-lang3>3.5</version.common-lang3>
         <version.logback>1.2.3</version.logback>
         <version.junit>4.12</version.junit>
         <version.mockito>2.7.21</version.mockito>
         <version.hamcrest>1.3</version.hamcrest>
-        <version.undertow>1.4.11.Final</version.undertow>
+        <version.undertow>1.4.20.Final</version.undertow>
     </properties>
     <dependencies>
         <dependency>