Updated version to 2.8.0-SNAPSHOT

Author: kevzlou7979

pom.xml

@@ -7,7 +7,7 @@
 
     <groupId>com.github.gwtmaterialdesign</groupId>
     <artifactId>gwt-material-am4charts</artifactId>
-    <version>2.8.0</version>
+    <version>2.8.0-SNAPSHOT</version>
     <packaging>gwt-lib</packaging>
 
     <name>Gwt Material AmCharts V4</name>