Upgrade to Tycho 0.26.0 (supports building with Java 9)
diff --git a/pom.xml b/pom.xml
index 861a060..f7a7a81 100644
--- a/pom.xml
+++ b/pom.xml
@@ -87,7 +87,7 @@
     <maven.compiler.source>1.6</maven.compiler.source>
     <maven.compiler.target>1.6</maven.compiler.target>
     <tycho.scmUrl>scm:git:http://git.eclipse.org/gitroot/sisu/org.eclipse.sisu.plexus.git</tycho.scmUrl>
-    <tycho-version>0.25.0</tycho-version>
+    <tycho-version>0.26.0</tycho-version>
   </properties>
 
   <build>