Build: fix gradle warnings.

app/build.gradle

@@ -141,8 +141,8 @@ dependencies {
     implementation "com.android.support:cardview-v7:$supportVersion"
     implementation "com.android.support:design:$supportVersion"
     implementation "com.android.support:preference-v14:$supportVersion"
-    compile 'com.github.yukuku:ambilwarna:2.0.1'
-    compile('com.github.worker8:tourguide:1.0.17-SNAPSHOT@aar') {
+    implementation 'com.github.yukuku:ambilwarna:2.0.1'
+    implementation ('com.github.worker8:tourguide:1.0.17-SNAPSHOT@aar') {
         transitive = true
     }
 
@@ -152,24 +152,26 @@ dependencies {
     implementation "io.requery:requery-kotlin:$requeryVersion"
     kapt "io.requery:requery-processor:$requeryVersion"
 
-    compile 'com.madgag.spongycastle:core:1.54.0.0'
-    compile 'com.madgag.spongycastle:prov:1.54.0.0'
-    compile 'com.google.code.gson:gson:1.7.2'
-    compile 'com.squareup.okhttp3:logging-interceptor:3.8.0'
-    compile 'org.apache.commons:commons-collections4:4.1'
-    compile 'net.cachapa.expandablelayout:expandablelayout:2.9.2'
-    compile project(':cert4android')
-    compile project(':ical4android')
-    compile project(':vcard4android')
+    implementation 'com.madgag.spongycastle:core:1.54.0.0'
+    implementation 'com.madgag.spongycastle:prov:1.54.0.0'
+    implementation 'com.google.code.gson:gson:1.7.2'
+    implementation 'com.squareup.okhttp3:logging-interceptor:3.8.0'
+    implementation 'org.apache.commons:commons-collections4:4.1'
+    implementation 'org.apache.commons:commons-lang3:3.8.1'
+
+    implementation 'net.cachapa.expandablelayout:expandablelayout:2.9.2'
+    implementation project(':cert4android')
+    implementation project(':ical4android')
+    implementation project(':vcard4android')
     // for tests
-    androidTestCompile('com.android.support.test:runner:0.5') {
+    androidTestImplementation('com.android.support.test:runner:0.5') {
         exclude group: 'com.android.support', module: 'support-annotations'
     }
-    androidTestCompile('com.android.support.test:rules:0.5') {
+    androidTestImplementation('com.android.support.test:rules:0.5') {
         exclude group: 'com.android.support', module: 'support-annotations'
     }
-    androidTestCompile 'junit:junit:4.12'
-    androidTestCompile 'com.squareup.okhttp3:mockwebserver:3.8.0'
-    testCompile 'junit:junit:4.12'
-    testCompile 'com.squareup.okhttp3:mockwebserver:3.8.0'
+    androidTestImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.squareup.okhttp3:mockwebserver:3.8.0'
+    testImplementation 'junit:junit:4.12'
+    testImplementation 'com.squareup.okhttp3:mockwebserver:3.8.0'
 }

cert4android

@@ -1 +1 @@
-Subproject commit 594fcba6289bc7812c1dccc3a84c7e677f29dd7a
+Subproject commit 0d2593c04c13060ba68762e381325cea635b9bed