release version v0.3

1. Support MySQL 5.7 to the block/release user feathre ;
2. Fixed the bond device name regexp;
3. Add the event_scheduler feature;

release version v0.2

1. change the vip to optional option which in masterha-script.cnf;
2. fix the master_ip_failover bugs;
3. skip proxysql setup if there is any connect error;

release version v0.1

fix new master semi set