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updates.md

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-### 0.21.0
-The E2EE encryption V2 format has been reverted. That was probably the cause of the glitch.
-Instead, to maintain efficiency, files are treated with Blob until just before saving. Along with this, the old-fashioned encryption format has also been discontinued.
-There are both forward and backwards compatibilities, with recent versions. However, unfortunately, we lost compatibility with filesystem-livesync or some.
-It will be addressed soon. Please be patient if you are using filesystem-livesync with E2EE.
+### 0.22.0
+A few years passed since Self-hosted LiveSync was born, and our codebase had been very complicated. This could be patient now, but it should be a tremendous hurt.
+Therefore at v0.22.0, for future maintainability, I refined task scheduling logic totally.
 
+Of course, I think this would be our suffering in some cases. However, I would love to ask you for your cooperation and contribution.
+
+Sorry for being absent so much long. And thank you for your patience!
+
+Note: we got a very performance improvement.
 
 #### Version history
-- 0.21.5
-  - Improved:
-    - Now all revisions will be shown only its first a few letters.
-    - Now ID of the documents is shown in the log with the first 8 letters.
+- 0.22.0
+  - Refined:
+    - Task scheduling logics has been rewritten.
+    - Possibly many bugs and fragile behaviour has been fixed
   - Fixed:
-    - Check before modifying files has been implemented.
-    - Content change detection has been improved.
-- 0.21.4
-  - This release had been skipped.
-- 0.21.3
-  - Implemented:
-    - Now we can use SHA1 for hash function as fallback.
-- 0.21.2
-  - IMPORTANT NOTICE: **0.21.1 CONTAINS A BUG WHILE REBUILDING THE DATABASE. IF YOU HAVE BEEN REBUILT, PLEASE MAKE SURE THAT ALL FILES ARE SANE.**
-    - This has been fixed in this version.
-  - Fixed:
-    - No longer files are broken while rebuilding.
-    - Now, Large binary files can be written correctly on a mobile platform.
-    - Any decoding errors now make zero-byte files.
-  - Modified:
-    - All files are processed sequentially for each.
-- 0.21.1
-  - Fixed:
-    - No more infinity loops on larger files.
-    - Show message on decode error.
-  - Refactored:
-    - Fixed to avoid obsolete global variables.
-- 0.21.0
-  - Changes and performance improvements:
-    - Now the saving files are processed by Blob.
-    - The V2-Format has been reverted.
-    - New encoding format has been enabled in default.
-    - WARNING: Since this version, the compatibilities with older Filesystem LiveSync have been lost.
+    - Remote-chunk-fetching now works with keeping request intervals
+  - New feature:
+    - We can show only the icons in the editor.
+
 
 ... To continue on to `updates_old.md`.