bump sdk and build tools version

Author: 2dxgujun

build.gradle

@@ -1,12 +1,12 @@
 buildscript {
-  ext.kotlin_version = '1.2.20'
+  ext.kotlin_version = '1.2.71'
 
   repositories {
     google()
     jcenter()
   }
   dependencies {
-    classpath 'com.android.tools.build:gradle:3.0.1'
+    classpath 'com.android.tools.build:gradle:3.2.1'
     classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.0'
     classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Dec 26 10:27:45 CST 2017
+#Tue Oct 23 11:11:59 CST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip

span/build.gradle

@@ -4,11 +4,11 @@ apply plugin: 'com.jfrog.bintray'
 apply plugin: 'com.github.dcendents.android-maven'
 
 android {
-  compileSdkVersion 27
+  compileSdkVersion 28
 
   defaultConfig {
     minSdkVersion 16
-    targetSdkVersion 27
+    targetSdkVersion 28
   }
 
   sourceSets {
@@ -18,7 +18,7 @@ android {
 
 dependencies {
   api "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-  api 'com.android.support:support-annotations:27.0.2'
+  api 'com.android.support:support-annotations:28.0.0'
 }
 
 def GROUP = 'me.gujun.android'