totalngrams: use chronicle map for larger maps
diff --git a/pom.xml b/pom.xml
index f7ecbdd..6466062 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>groupId</groupId>
     <artifactId>nGrammFoldCount</artifactId>
-    <version>1.1</version>
+    <version>1.2</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -152,9 +152,17 @@
         </dependency>
         <!-- https://mvnrepository.com/artifact/org.anarres/parallelgzip -->
         <dependency>
+            <scope>compile</scope>
             <groupId>org.anarres</groupId>
             <artifactId>parallelgzip</artifactId>
             <version>1.0.5</version>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/net.openhft/chronicle-map -->
+        <dependency>
+            <scope>compile</scope>
+            <groupId>net.openhft</groupId>
+            <artifactId>chronicle-map</artifactId>
+            <version>3.17.8</version>
+        </dependency>
     </dependencies>
 </project>
\ No newline at end of file