updated readme.md to show all changes for version 4.3

Author: wumpz

README.md

@@ -58,6 +58,21 @@ Also I would like to know about needed examples or documentation stuff.
 
 * moved to JUnit 5 as a test framework
 * added **IGNORE NULLS** to window functions
+* Postgres compliant **ALTER TABLE schema.oldTableName RENAME TO newTableName**
+* added use of * or mytable.* as a function parameter
+* enhanced support for ddl drop of indexes
+* support alias for Unpivot statement
+* support for limit and offset expressions
+* support for special **JSON_OBJECT** function parsing
+* allow ComplexExpressions for **CASE** expression (preview)
+* support MYSQL modifiers for **DELETE** / **UPDATE** 
+* support for Postgres Dollar quotation:  **$$mystring$$**
+* support for expression in escaping of a like expression: **LIKE ? ESCAPE ?**
+* support for **CREATE OR REPLACE TABLE**
+* support for multi column unpivot
+* support for **RESTART** in Postgres **ALTER SEQUENCE**
+* improved support of **IGNORE NULLS** in window functions
+* upgraded some maven plugin versions
 
 Additionally, we have fixed many errors and improved the code quality and the test coverage.