add ?-contained operator support
add doc for ?-contained operator support
Enhance connection fail-over with master/slave restriction and add load balancing of connections among multiple hosts. Based on work by chenhj@cn.fujitsu.com
Resolve the build error (#227)
Change the testing type from ltree to built-in geometry (#227)
Merge pull request #227 from tminglei/contains-operator

add ?-contained operator support
Thanks for all your work on this!
Merge pull request #209 from NitorCreations/master

Enhance connection fail-over with master/slave restriction and load balancing

Thanks !