Merge pull request aliyun#431 from aliyun/release-200

Release 200

add latest jars (aliyun#402)

add prebuild v1.8.0 datasource jar (aliyun#380)

update datasource jars (aliyun#330)

update datasource jars

prepare to release v1.6.0

release 1.5.0

release 1.5.0

release 1.4.4

 reconnect log-service when connect timeout (aliyun#212)

* add spark batch log service rdd

* add tag in log data

* add retry when connect log-service timeout, fix getPartitions with order

Update how_to_run_spark_with_python_sdk.md (aliyun#202)