Updated: CHANGELOG.md

Author: upupming

CHANGELOG.md

@@ -1,19 +1,27 @@
 # arithmetic-coding CHANGELOG
 
-## v1.0.0
+## v1.2.1
 
-2019.03.29
+2019.03.31
 
-- Finished API and CLI support.
+- Added Chinese documentation.
+- Adopted Standard JS style.
+- Updated benchmarks.
+
+## v1.2.0
+
+2019.03.30
+
+- Removed `long.js` and change number of bits for better performance.
 
 ## v1.1.0
 
 2019.03.30
 
 - Added Buffer support.
 
-## v1.2.0
+## v1.0.0
 
-2019.03.30
+2019.03.29
 
-- Remove `long.js` and change number of bits for better performance.
+- Finished API and CLI support.