Upgrade versions of dependent libraries

Author: markpollack

gradle.properties

@@ -1,11 +1,11 @@
 version=1.2.0.BUILD-SNAPSHOT
 
-slf4jVersion=1.7.7
+slf4jVersion=1.7.13
 guavaVersion=17.0
 jlineVersion=2.12
-junitVersion=4.11
-springVersion=4.0.6.RELEASE
+junitVersion=4.12
+springVersion=4.2.4.RELEASE
 commonsioVersion=2.4
 hamcrestVersion=1.3
-mockitoVersion=1.9.5
+mockitoVersion=1.10.19
 hamcrestDateVersion=0.9.3