+- new: IOUtils: openResource with anchor class
+- new: ConfigItem: easier to extend
+- fix: CacheMemory: fix stackoverflow bug
+- fix: Bundles/TransBundles: def values
+
+## Version 5.1.0
+
+- Downloader: new Offline mode for cache accesses only
+- Cache: make sure an immedate SAVE/LOAD always work, even with 0 retention delays
+
+## Version 5.0.0
+