Prepare versions and change log for release 8.0.0 (#318)

Author: devchas

CHANGELOG.md

@@ -1,3 +1,8 @@
+8.0.0 - 2020-07-31
+------------------
+- Removed v1 from the library.
+- Added example demonstrating how to add a geo target to an extension feed item.
+
 7.0.0 - 2020-07-23
 ------------------
 - Generated library with a new build system. A side effect of that change is

README.md

@@ -18,7 +18,7 @@ This project hosts the Java client library for the Google Ads API.
     <dependency>
       <groupId>com.google.api-ads</groupId>
       <artifactId>google-ads</artifactId>
-      <version>7.0.0</version>
+      <version>8.0.0</version>
     </dependency>
 
 ## Documentation