Influxdb

Changed
- Correctly serialize nanosecond dataframe timestamps (926)

Added
- Add support for custom headers in the InfluxDBClient (710 thx nathanielatom)
- Add support for custom indexes for query in the DataFrameClient (785)

Changed
- Amend retry to avoid sleep after last retry before raising exception (790 thx krzysbaranski)
- Remove msgpack pinning for requirements (818 thx prometheanfire)
- Update support for HTTP headers in the InfluxDBClient (851 thx bednar)

Removed

Added
- Add mypy testing framework (756)
- Add support for messagepack (734 thx lovasoa)
- Add support for 'show series' (357 thx gaker)
- Add support for custom request session in InfluxDBClient (360 thx dschien)
- Add support for handling np.nan and np.inf values in DataFrameClient (436 thx nmerket)
- Add support for optional `time_precision` in the SeriesHelper (502 && 719 thx appunni-dishq && klDen)
- Add ability to specify retention policy in SeriesHelper (723 thx csanz91)
- Add gzip compression for post and response data (732 thx KEClaytor)
- Add support for chunked responses in ResultSet (753 and 538 thx hrbonz && psy0rz)
- Add support for empty string fields (766 thx gregschrock)
- Add support for context managers to InfluxDBClient (721 thx JustusAdam)

Changed
- Clean up stale CI config (755)
- Add legacy client test (752 & 318 thx oldmantaiter & sebito91)
- Update make_lines section in line_protocol.py to split out core function (375 thx aisbaa)
- Fix nanosecond time resolution for points (407 thx AndreCAndersen && clslgrnc)
- Fix import of distutils.spawn (805 thx Hawk777)
- Update repr of float values including properly handling of boolean (488 thx ghost)
- Update DataFrameClient to fix faulty empty tags (770 thx michelfripiat)
- Update DataFrameClient to properly return `dropna` values (778 thx jgspiro)
- Update DataFrameClient to test for pd.DataTimeIndex before blind conversion (623 thx testforvin)
- Update client to type-set UDP port to int (651 thx yifeikong)
- Update batched writing support for all iterables (746 thx JayH5)
- Update SeriesHelper to enable class instantiation when not initialized (772 thx ocworld)
- Update UDP test case to add proper timestamp to datapoints (808 thx shantanoo-desai)

Removed

Added
- Add consistency param to InfluxDBClient.write_points (643 thx RonRothman)
- Add UDP example (648 thx shantanoo-desai)
- Add consistency paramter to `write_points` (664 tx RonRothman)
- The query() function now accepts a bind_params argument for parameter binding (678 thx clslgrnc)
- Add `get_list_continuous_queries`, `drop_continuous_query`, and `create_continuous_query` management methods for
continuous queries (681 thx lukaszdudek-silvair && smolse)
- Mutual TLS authentication (702 thx LloydW93)

Changed
- Update test suite to add support for Python 3.7 and InfluxDB v1.6.4 and 1.7.4 (692 thx clslgrnc)
- Update supported versions of influxdb + python (693 thx clslgrnc)
- Fix for the line protocol issue with leading comma (694 thx d3banjan)
- Update classifiers tuple to list in setup.py (697 thx Hanaasagi)
- Update documentation for empty `delete_series` confusion (699 thx xginn8)
- Fix newline character issue in tag value (716 thx syhan)
- Update tests/tutorials_pandas.py to reference `line` protocol, bug in `json` (737 thx Aeium)

Removed

Added

Changed
- Fix 'TypeError: Already tz-aware' introduced with recent versions of Panda (671, 676, thx f4bsch clslgrnc)

Added

Changed
- Pass through the "method" kwarg to DataFrameClient queries

Removed