0.4.8 (22nd November 2019)
--------------------------
- Added: Binning "human" accepts kind="time"
- Added: find_human_width and related methods in bin_utils
- Fix: No labels and color cycling in scatter plots for collections

0.4.7 (31th October 2019)
-------------------------
- Changed: Small improvements in histogram collections and time tick handler
- Fixed: several small bugs

0.4.6 (24th May 2019)
----------------------
- Changed: added `edges` property that will deprecate `numpy_bins`
- Fixed: several small bugs

0.4.5 (1st April 2019)
----------------------
- Added: I/O for HistogramCollection
- Added: physt.collection facade function

0.4.4 (4th March 2019)
----------------------
- Changed: plotly plots now using the original API instead of wrapping matplotlib
- Added: new methods for histogram collections
- Added: plotting histogram collections in plotly
- Added: basic 'map' plot for plotly

0.4.3 (2nd March 2019)
----------------------
- Added: histogram collection (experiment, basic behaviour)
- Added: some basic collection plotting in vega & matplotlib
- Added: legends in vega (for some plots)
- Fixed: several small bugs
- Added: more documentation and typing hints

0.4.2 (15th February 2019)
--------------------------
- Added: time-based ticks for matplotlib plots (experimental)
- Added: a lot of type hints in whole codebase

0.4.1 (6th February 2019)
-------------------------
- Added: basic ASCII plots (experimental)

0.4.0 (5th February 2019)
-------------------------
- CHANGE: drop support for Python 2.7
- Fixed: several small bugs - #49, #54, ... 

0.3.43 (1st October 2018)
-------------------------
- Added: Basic support for writing ROOT files using uproot

0.3.42 (21st September 2018)
----------------------------
- Added: google protobuf I/O of histograms (experimental, incomplete)
- Changed: restructured the physt.io package into more modules

0.3.41 (25th July 2018)
-----------------------
- Added: colorbar with matplotlib polar_map

0.3.40 (8th July 2018)
----------------------
- Added: .adaptive property to histograms (deprecating is_/set_ methods)
- Fixed: various small bugs

0.3.39 (7th July 2018)
----------------------
- Added: matplotlib backend step plot
- Added: string representation for binnings
- Added: binning(s) as a public property of histograms

0.3.38 (4th July 2018)
-----------------------
- Added: vega plotting backend: xlim, ylim arguments
- Added: matplotlib plotting backend: simplified stats box with totals
- Fixed: several minor bugs

0.3.37 (6th June 2018)
----------------------
- Added: vega plotting backend shows tooltips
- Added: vega plotting backend accepts more formatting options
- Added: text formatting for values displayed in the plot
- Fixed: plotly plotting function did not work sometimes

0.3.36 (24th May 2018)
----------------------
- Fixed: requires numpy for installation (setup.py)

0.3.35 (16th May 2018)
----------------------
- Added: plotly plotting backend (basics)

0.3.34 (8th May 2018)
---------------------
Fixed: several minor bugs
Changed: dropna=True by default

0.3.33 (4th April 2018)
-----------------------
- Enhanced: vega plotting backend accepting more parameters (closer to matplotlib)
- Fixed: several minor bugs

0.3.32 (28th February 2018)
---------------------------
- Removed: bokeh plotting backend (as it is outdated)
- Added: vega plotting backend (as alpha but with cool features already)

0.3.31 (14th December 2017)
---------------------------
- Added: slicing ND histograms with [] - works for ints and slices (alpha)
- Added: physt.helpers.db to create histograms from cursors (preview)
- Added: h() facade function; histogram, histogram2d and histogramdd will become obsolete

0.3.30 (13th July 2017)
-----------------------
- Added: default parameters in matplotlib backend
- Changed: refactoring of matplotlib backend (DRY)
- Fixed: several bugs

0.3.29 (7th July 2017)
----------------------
- Added: "fist example"
- Changed: several binning methods use bin_count instead of bins
- Changed: matplotlib plotting methods accept `title`, `xlabel`, `ylabel` arguments

0.3.28.1 (15th April 2017)
--------------------------
- Fixed: Python 2.7 behaviour (some or most?)
- Added: bokeh line plot type

0.3.28 (10th April 2017)
------------------------
- Added: bokeh map plot type
- Fixed: various bugs

0.3.27 (30th March 2017)
------------------------
- Added: HistogramND.select to slice histograms
- Fixed: various bugs

0.3.26 (27th March 2017)
------------------------
- Optimization: Reduced memory overhead of h1 by 60 %.
- Fixed: small bugs

0.3.25 (25th March 2017)
------------------------
- Added: more items in physt.examples
- Changed: merge_bins not inplace by default
- Changed: unified (hopefully) treatment of value_format in matplotlib plotting
- Fixed: various bugs

0.3.24 skipped to match dates ;-)

0.3.23 (16th March 2017)
------------------------
- Added: geo_map plot type (based on folium)
- Fixed: various bugs

0.3.22 (16th January 2017)
--------------------------
- Added: JSON output/input (not much tested, but already reads files)
- Added: physt.example namespace for simple ready-made histograms.
- Fixed: various bugs

0.3.21 (19th November 2016)
---------------------------
- Added: fill plot type
- Changed: h.plot(histtype=) changed to kind= (similar to pandas)

0.3.20 (8th November 2016)
--------------------------
- Changed: refactored the meta data & copy() method
- Added: Output to JSON (experimental)
- Fixed: several bugs

0.3.19 (3th October 2016)
-------------------------
- Added: support zorder for most matplotlib plotting functions

0.3.18 (2nd October 2016)
-------------------------
- Fix: a few dtype-related bugs
- Changed: refactor constructors to HistogramBase

0.3.17 (23rd September 2016)
----------------------------
- Added: possibility to transform coordinates in 2D maps

0.3.16 (21st September 2016)
----------------------------
- Added: cylinder_map plot type
- Added: surface_map plot type

0.3.15 (15th September 2016)
----------------------------
- Added: globe_map plot for directional histograms
- Changed: Reworked projections of cylindrical / spherical histograms

0.3.14 (14th September 2016)
----------------------------
- Added: CylindricalHistogram
- Changed: More complete implementation of polar / spherical histograms

0.3.13 (12th September 2016)
----------------------------
- Added: TransformedHistogramMixin for special histograms
- Fix: a few dtype-related bugs
- Fix: a lot of polar histogram bugs

0.3.12 (6th September 2016)
---------------------------
- Fix: a few minor bugs

0.3.11 (22nd August 2016)
-------------------------
- Changed: transform parameter in matplotlib plotting -> cmap_normalize
- Changed: show_colorbar parameter works in "image" matplotlib plotting
- Changed: "special" histogram plotting less "special"

0.3.10 (12th August 2016)
-------------------------
- Added: astropy binning schemes (return)
- Added: Histogram2D.T - a fast transpose
- Fix: a few minor bugs in plotting

0.3.9 (11th August 2016)
------------------------
- Changed: moved dask support to compat package
- Added: pair_plot for two histograms
- Fix: a few minor bugs

0.3.8 (2nd August 2016)
-----------------------
- Changed: Refactor plotting to a module (no code rewrite required)

0.3.7 (1st August 2016)
-----------------------
- Added: xscale/yscale, xlim/ylim argument for 1D plots
- Fix: a few minor bugs

0.3.6 (27th July 2016)
---------------------
- Added: Histogram dtypes (beta)
- Added: "image" plot type for Histogram2D
- Added: Geant4 CSV histograms input
- Fix: Broken polar histogram

0.3.5 (5th July 2016)
---------------------
- Added: Merging of bins

0.3.4 (30th June 2016)
----------------------
- Added: Support for Python 2.7

0.3.3 (29th June 2016)
----------------------
- Fix: Many bugs
- Changed: Binnings reworked to classes
- Updated: Adaptive histogram
- Added: Adaptive histogram multi-dimensional
- Added: Basic support for dask (alpha)

0.3.2 (3rd June 2016)
---------------------
- Fix: arithmetics with ND histograms
- Fix: statistics
- Added: adaptive histogram (alpha)

0.3.1 (1st June 2016)
---------------------
- bug fixes

0.3 (May 2016)
--------------
Added (in contrast to 0.2)
- 2D, ND histograms (relatively stable)
- Polar histograms (alpha)
- Statistics (alpha)

0.2 (April 2016)
----------------
- Stable 1D API
- Several binning schemes
