Bump SNAPSHOT to 2.8.4

Author: jasmith-hs

pom.xml

@@ -10,7 +10,7 @@
 
   <groupId>com.hubspot.jinjava</groupId>
   <artifactId>jinjava</artifactId>
-  <version>2.8.3-SNAPSHOT</version>
+  <version>2.8.4-SNAPSHOT</version>
 
   <name>${project.groupId}:${project.artifactId}</name>
   <description>Jinja templating engine implemented in Java</description>