Move version to 0.8.0-SNAPSHOT after release

Author: dr0i

build.gradle

@@ -54,7 +54,7 @@ subprojects {
   }
 
   group = 'org.metafacture'
-  version = '0.7.0'
+  version = '0.8.0-SNAPSHOT'
 
   apply plugin: 'checkstyle'
   apply plugin: 'eclipse'