release 6.2.3

Author: boliza

build.gradle

@@ -1,6 +1,6 @@
 buildscript {
     ext {
-        elasticserachVersion = '6.1.4'
+        elasticserachVersion = '6.2.3'
         hanlpVersion = '1.5.3'
     }
 
@@ -16,7 +16,7 @@ buildscript {
 }
 
 group = 'io.shike'
-version = '6.1.4'
+version = '6.2.3'
 
 repositories {
     mavenLocal()
@@ -28,8 +28,8 @@ apply plugin: 'java'
 apply plugin: 'idea'
 apply plugin: 'elasticsearch.esplugin'
 
-sourceCompatibility = JavaVersion.VERSION_1_8
-targetCompatibility = JavaVersion.VERSION_1_8
+sourceCompatibility = JavaVersion.VERSION_1_9
+targetCompatibility = JavaVersion.VERSION_1_9
 
 licenseFile = rootProject.file('LICENSE.txt')
 noticeFile = rootProject.file('NOTICE.txt')