Fixed CHANGELOG and disable one test on windows (#577)

CHANGELOG.md

@@ -22,6 +22,7 @@ Arc<RwLock<IndexWriter>>`. `add_document` and `delete_term` can
 only require a read lock. (@pmasurel)
 - Introducing `Opstamp` as an expressive type alias for `u64`. (@petr-tik)
 - Stamper now relies on `AtomicU64` on all platforms (@petr-tik)
+- Bugfix - Files get deleted slightly earlier
 
 ## How to update?
 

src/core/index.rs

@@ -538,6 +538,9 @@ mod tests {
         assert_eq!(count, 2);
     }
 
+    // This test will not pass on windows, because windows
+    // prevent deleting files that are MMapped.
+    #[cfg(not(target_os = "windows"))]
     #[test]
     fn garbage_collect_works_as_intended() {
         let directory = RAMDirectory::create();