Log Message:
py-pymysql: updated to 1.1.0

v1.1.0

* Fixed SSCursor raising OperationalError for query timeouts on wrong statement
* Exposed `Cursor.warning_count` to check for warnings without additional query
* Make Cursor iterator
* Support '_' in key name in my.cnf
* `Cursor.fetchall()` returns empty list instead of tuple
* Deprecate Error classes in Cursor class
* Add `Connection.set_character_set(charset, collation=None)`. This method is \ 
compatible with mysqlclient.
* Deprecate `Connection.set_charset(charset)`
* New connection always send "SET NAMES charset [COLLATE collation]" query.
  Since collation table is vary on MySQL server versions, collation in handshake \ 
is fragile.
* Support `charset="utf8mb3"` option