Prepare release 3.1.0

Author: greenrobot-team

README.md

@@ -4,7 +4,7 @@
 [ObjectBox](https://objectbox.io/) is a superfast object-oriented database with strong relation support.
 ObjectBox is embedded into your Android, Linux, macOS, or Windows app.
 
-**Latest version: [3.0.1 (2021/10/19)](https://docs.objectbox.io/#objectbox-changelog)**
+**Latest version: [3.1.0 (2021/12/15)](https://docs.objectbox.io/#objectbox-changelog)**
 
 Demo code using ObjectBox:
 
@@ -40,7 +40,7 @@ For Android projects, add the ObjectBox Gradle plugin to your root `build.gradle
 
 ```groovy
 buildscript {
-    ext.objectboxVersion = "3.0.1"
+    ext.objectboxVersion = "3.1.0"
     repositories {        
         mavenCentral()    
     }

build.gradle

@@ -1,8 +1,8 @@
 buildscript {
     ext {
         // Typically, only edit those two:
-        def objectboxVersionNumber = '3.0.2' // without "-SNAPSHOT", e.g. '2.5.0' or '2.4.0-RC'
-        def objectboxVersionRelease = false  // set to true for releasing to ignore versionPostFix to avoid e.g. "-dev" versions
+        def objectboxVersionNumber = '3.1.0' // without "-SNAPSHOT", e.g. '2.5.0' or '2.4.0-RC'
+        def objectboxVersionRelease = true  // set to true for releasing to ignore versionPostFix to avoid e.g. "-dev" versions
 
         // version post fix: '-<value>' or '' if not defined; e.g. used by CI to pass in branch name
         def versionPostFixValue = project.findProperty('versionPostFix')

objectbox-java/src/main/java/io/objectbox/BoxStore.java

@@ -69,9 +69,9 @@ public class BoxStore implements Closeable {
     @Nullable private static Object relinker;
 
     /** Change so ReLinker will update native library when using workaround loading. */
-    public static final String JNI_VERSION = "3.0.1";
+    public static final String JNI_VERSION = "3.1.0";
 
-    private static final String VERSION = "3.0.1-2021-10-18";
+    private static final String VERSION = "3.1.0-2021-12-15";
     private static BoxStore defaultStore;
 
     /** Currently used DB dirs with values from {@link #getCanonicalPath(File)}. */