v4.1.1

* Space padded select-queries should now return DataFrames
* Update to newer pandas API
* Fixed issue where UDP line protocol sending fails due to
  an uninitialized variable

v4.1.0

* Fix DataFrameClient empty tag processing
* Fixes for mutable default parameters in dataframe
* Fix for using from_DSN constructor with dataframe
* Better handle databases with spaces in the name
* Added chunk size parameter
* Performance improvements in make_lines
* Allow user-configurable number of retries when
  submitting request to the database

* Various DataFrame client fixes

* Improvements in timezone handling
* Properly quote all identifiers and literals
* Removed get_list_servers
* Fixes in tutorial_server_data.py
* Added more data type examples to tutorial.py

* New get_list_privileges() method.

* New grant_admin_privileges() method.
* *BREAKING CHANGE* Removed get_list_series()
* Line protocol: fixed encoding issues

* improved ResultSet.items() performance

* now support python 2.6

* python 2.6 support fixes

* if_not_exists option for create_database
* new get_list_servers() method
* make use of urlparse to parse netloc
* fixed issue for creating/dropping numeric-named databases
* added healing feature on InfluxClusterClient
* made InfluxDBClusterClient thread-safe

* support for requests http(s) proxy

* python 3.5 compatibility fixes
* avoid mutable value for defaults of functions
* fixed switch_database for cluster client

* Added license to package

* Fix pandas FutureWarning

* Depend on six>=1.9.0

* Don't append 'i' to booleans