* 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

* Adapted to new line protocol: append a `i` to new integers

* Improved line protocol performance

* line protocol: handle None tags and fields
* line protocol: time precision support - timestamps that
  are send as integers are left intact but other timestamps
  are converted depending on the time precision
* line protocol: Handle field string values with several newlines

* Moved tests to influxdb package

* Added support for INFLUXDB_PYTHON_SKIP_SERVER_TESTS

* influxdb08: Requests - catch Timeouts

* Enable doctests

* Ensure tests pass without influxdb bin

* Fixed bad 'SHOW RETENTION POLICIES' syntax

* Make use of the new line protocol API

* Convert NaN values to None in numpy arrays