compile+target sdk 28, gradle 4.6

usbSerialForAndroid/build.gradle

@@ -3,12 +3,12 @@ apply plugin: 'maven'
 apply plugin: 'signing'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 27
+        targetSdkVersion 28
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
@@ -22,10 +22,10 @@ android {
 
 dependencies {
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support:support-annotations:27.1.1'
+    androidTestImplementation 'com.android.support:support-annotations:28.0.0'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'commons-net:commons-net:3.6'
-    androidTestImplementation 'org.apache.commons:commons-lang3:3.7'
+    androidTestImplementation 'org.apache.commons:commons-lang3:3.8.1'
 }
 
 group = "com.hoho.android"

usbSerialForAndroid/src/main/AndroidManifest.xml

@@ -3,5 +3,4 @@
       package="com.hoho.android.usbserial"
       android:versionCode="1"
       android:versionName="1.0">
-    <uses-sdk android:minSdkVersion="12" />
 </manifest>