Bump parser version

build.gradle

@@ -20,7 +20,7 @@ configurations { // configuration that holds jars to copy into lib
 	releaseJars 
 }
  
-def parser_version = '2.4.22-SNAPSHOT'
+def parser_version = '2.4.28-SNAPSHOT'
 
 dependencies {
 	//compile (group: 'com.microsoft', name: 'tla2tools', version: '1.4.6')