Clean up gradle dependencies.

build.gradle

@@ -17,12 +17,9 @@ buildscript {
 }
 
 dependencies {
-    implementation 'com.fasterxml.jackson.core:jackson-core:2.9.8'
-    implementation 'com.fasterxml.jackson.core:jackson-databind:2.9.8'
-    implementation 'com.github.spullara.mustache.java:compiler:0.9.6'
+    implementation group: 'com.github.spullara.mustache.java', name: 'compiler', version: '0.9.6'
     implementation group: 'org.apache.logging.log4j', name: 'log4j-jul', version: '2.11.2'
-//    api 'org.jastadd:jastadd:2.3.4'
-    runtime 'org.jastadd:jastadd:2.3.4'
+    runtime group: 'org.jastadd', name: 'jastadd', version: '2.3.4'
     api group: 'net.sf.beaver', name: 'beaver-rt', version: '0.9.11'
 }