创建beta版本标记。

分支标记

Merge pull request MyCATApache#156 from sohudo/1.3.0.1

1.3.0.1 JDBC方式， 字段有别名，报错 java.lang.IllegalArgumentException: group by

修改版本号,1.3.0.3-alpha

修复bug

Merge pull request MyCATApache#35 from opencloudb/master

add logs dir

Merge pull request MyCATApache#28 from opencloudb/master

Merge remote-tracking branch 'origin/master'