RELEASE NOTES FIX BUGS: [TD-1533]: fix the parse jdbc url error [TD-1523]: fix memory leaks and refactor some functions. [TD-225]: fix compiler error on windows [TD-1532]: fix taosdemo case bug NEW FEATURES: [TD-1572]: A JdbcTaosdemo is supported now. [TD-1603]: add new error code at client side [TD-1651]: add lgtm code analyzer support. [TD-1313]: implement getColumns method in the TSDBDatabaseMet… TEST: [TD-1386]: add test case for retention [TD-1587]: add python restful example [TD-1469]: add test case for alter table and insert