Update version number

Author: thomasmueller

README.md

@@ -32,7 +32,7 @@ When using Maven:
     <dependency>
       <groupId>io.github.fastfilter</groupId>
       <artifactId>fastfilter</artifactId>
-      <version>1.0.3</version>
+      <version>1.0.4</version>
     </dependency>
 
 # Other Xor Filter Implementations