Update change log, and version numbers in documentation.

CHANGELOG.md

@@ -1,6 +1,12 @@
 Change Log
 ==========
 
+## Version 2.8.8
+
+* Fixed issue with recursive types (#1390).
+* Better behaviour with Java 9+ and `Unsafe` if there is a security manager (#1712).
+* `EnumTypeAdapter` now works better when ProGuard has obfuscated enum fields (#1495).
+
 ## Version 2.8.7
 
 * Fixed `ISO8601UtilsTest` failing on systems with UTC+X.

README.md

@@ -17,7 +17,7 @@ There are a few open-source projects that can convert Java objects to JSON. Howe
 Gradle:
 ```gradle
 dependencies {
-  implementation 'com.google.code.gson:gson:2.8.7'
+  implementation 'com.google.code.gson:gson:2.8.8'
 }
 ```
 
@@ -26,7 +26,7 @@ Maven:
 <dependency>
   <groupId>com.google.code.gson</groupId>
   <artifactId>gson</artifactId>
-  <version>2.8.7</version>
+  <version>2.8.8</version>
 </dependency>
 ```
 

UserGuide.md

@@ -74,7 +74,7 @@ The Gson instance does not maintain any state while invoking Json operations. So
 ## <a name="TOC-Gson-With-Gradle"></a>Using Gson with Gradle/Android
 ```
 dependencies {
-    implementation 'com.google.code.gson:gson:2.8.7'
+    implementation 'com.google.code.gson:gson:2.8.8'
 }
 ```
 ## <a name="TOC-Gson-With-Maven"></a>Using Gson with Maven
@@ -86,7 +86,7 @@ To use Gson with Maven2/3, you can use the Gson version available in Maven Centr
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.8.7</version>
+      <version>2.8.8</version>
       <scope>compile</scope>
     </dependency>
 </dependencies>