Working on gradle for publishing. Bump version 1.0.3

Author: simone-gasparini

wordpressclient/build.gradle

@@ -8,7 +8,7 @@ android {
         minSdkVersion 19
         targetSdkVersion 29
         versionCode 1
-        versionName "1.0.2"
+        versionName "1.0.3"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -42,19 +42,19 @@ dependencies {
 
 task sourcesJar(type: Jar) {
     from android.sourceSets.main.java.srcDirs
-    classifier = 'sources'
+    archiveClassifier.set 'sources'
 }
 
 task javadoc(type: Javadoc) {
-    failOnError  false
+    failOnError false
     source = android.sourceSets.main.java.sourceFiles
     classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
     classpath += configurations.compile
 }
 
 // build a jar with javadoc
 task javadocJar(type: Jar, dependsOn: javadoc) {
-    classifier = 'javadoc'
+    archiveClassifier.set 'javadoc'
     from javadoc.destinationDir
 }
 
@@ -81,7 +81,7 @@ publishing {
             }
             groupId 'io.dualbit.wordpressclient'
             artifactId 'wordpressclient'
-            version '1.0.2'
+            version '1.0.3'
             pom.withXml {
                 def root = asNode()
                 root.appendNode('name', 'Android WordPress Client')