Fix instrumentation of interfaces with default methods (#428)

Without this change instrumented classes can't pass consistency
checks for a constant pool and cause IncompatibleClassChangeError
starting with OpenJDK 9 EA b122
(see https://bugs.openjdk.java.net/browse/JDK-8145148).
diff --git a/org.jacoco.doc/docroot/doc/changes.html b/org.jacoco.doc/docroot/doc/changes.html
index fdc0d8c..b2e9d4b 100644
--- a/org.jacoco.doc/docroot/doc/changes.html
+++ b/org.jacoco.doc/docroot/doc/changes.html
@@ -29,6 +29,10 @@
 
 <h3>Fixed Bugs</h3>
 <ul>
+  <li>Fix instrumentation of interfaces with default methods to not create incorrect
+      constant pool entries, which lead to <code>IncompatibleClassChangeError</code>
+      starting from OpenJDK 9 EA b122
+      (GitHub <a href="https://github.com/jacoco/jacoco/issues/428">#428</a>).</li>
   <li>Add Maven goal <code>report-aggregate</code> to lifecycle-mapping-metadata.xml
       (GitHub <a href="https://github.com/jacoco/jacoco/issues/427">#427</a>).</li>
 </ul>