fix: now taking into account --no-links when copying

Before we wouldn't override existing artifacts if they existed, even if
they were of the "wrong" type (e.g. a link when --no-links was specified).
Now we do.

src/main/java/org/codejive/jpm/Main.java

@@ -181,7 +181,9 @@ static class QuietMixin {
     }
 
     private static void printStats(SyncStats stats) {
-        System.err.printf("Artifacts copied: %d, deleted: %d%n", stats.copied, stats.deleted);
+        System.err.printf(
+                "Artifacts new: %d, updated: %d, deleted: %d%n",
+                stats.copied, stats.updated, stats.deleted);
     }
 
     public static void main(String... args) {

src/main/java/org/codejive/jpm/util/FileUtils.java

@@ -37,6 +37,9 @@ public static SyncStats syncArtifacts(
                 copyDependency(artifact, directory, noLinks);
                 artifactsToDelete.remove(artifactName);
                 stats.copied++;
+            } else if (Files.isSymbolicLink(target) == noLinks) {
+                copyDependency(artifact, directory, noLinks);
+                stats.updated++;
             }
         }