forgot to add bagit to recalculation of bag during writing out

Author: jscancella

src/main/java/gov/loc/repository/bagit/writer/BagWriter.java

@@ -144,6 +144,7 @@ protected static Set<Manifest> updateTagManifests(Bag bag) throws NoSuchAlgorith
     tagFilePaths.add(bag.getRootDir().resolve("bag-info.txt"));
     tagFilePaths.add(bag.getRootDir().resolve("package-info.txt"));
     tagFilePaths.add(bag.getRootDir().resolve("fetch.txt"));
+    tagFilePaths.add(bag.getRootDir().resolve("bagit.txt"));
 
     for(Manifest tagManifest : bag.getTagManifests()){
       Set<Path> pathsToUpdate = new HashSet<>(tagManifest.getFileToChecksumMap().keySet());