Merge branch 'release/1.0.2'
temprorarily fix for ping method

Compatible with the behavior of official MySQLdb, except that MySQLdb would raise ProgrammingError when autocommit == False.
query("select 1;") may change to query("show status;") whatever, just ugly test for the connection (is_connected() not works when kicked out by MySQL)
Bulk Insert handling for executemany
Bulk Insert without all the double conversions
Specify the PyMySQL version we can work with.
Merge pull request #4 from LeeXiaolan/pymysql-compatibility

Specify the PyMySQL version we can work with.
add changelog
Merge pull request #3 from fried/develop

Bulk Insert handling for executemany
Merge branch 'master' into develop
Merge pull request #2 from V-E-O/patch-1

temprorarily fix for ping method
Merge branch 'develop' of https://github.com/hongqn/umysqldb into develop
release 1.0.3
rename test case and fix the unit test
integrate with Travis CI
release 1.0.3
Merge branch 'release/1.0.3' into develop
develop toward 1.0.4
copy regexp from MySQL-python 1.2.4

Fix #7
Merge pull request #1 from hongqn/develop

update