Add change history to the documentation.

Author: Ghislain Fourny

README.md

@@ -179,3 +179,13 @@ return {
 print(seq.json());
 
 ```
+
+# Last updates
+
+## Version 0.1.0 alpha 8
+Ability to write back a sequence of items to local disk, HDFS, S3... in various formats (JSON, CSV, Parquet...).
+Automatically declare external variables bound as DataFrames to improve userfriendliness.
+Simplified the function names to make them more intuitive (json(), items(), df(), rdd(), etc).
+
+## Version 0.1.0 alpha 9
+Upgrade to Spark 4, which aligns the internal scala versions to 2.13 and should remove some errors. Requires Java 17 or 21.