Python to generate nice looking SVG graph http://pygal.org/
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V 2.0.0 UNRELEASED
Rework the ghost mechanism to come back to a more object oriented behavior, storing all state in a state object which is created every render.
Refactor maps
Add world continents
Add swiss cantons map (thanks sergedroz)
Add inverse_y_axis options to reverse graph (#24)
Fix DateTimeLine time data loss (#193)
Fix no data for graphs with only zeroes (#148)
Support value formatter for pie graphs (#218) (thanks never-eat-yellow-snow)
Add new Box plot modes and outliers and set extremes as default (#226 #121 #149) (thanks djezar)
Add secondary_range option to set range for secondary values. (#203)
Maps are now plugins, they are removed from pygal core and moved to packages (pygal_maps_world, pygal_maps_fr, pygal_maps_ch, ...) (#225)
Dot now supports negative values
Fix dot with log scale (#201)
V 1.7.0
Remove DateY and replace it by real XY datetime, date, time and timedelta support. (#188)
Introduce new XY configuration options: `xrange`, `x_value_formatter`.
Add show_x_labels option to remove them and the x axis.
Set print_values to False by default.
Fix secondary serie text values when None in data. (#192)
V 1.6.2
Add margin_top, margin_right, margin_bottom, margin_left options which defaults to margin. (thanks djt)
Update django mime parameter from mimetype to content_type. (thanks kswiat)
Allow a color and a style parameter to value metadata.
V 1.6.1
Fix Decimal incompatibility
V 1.6.0
Adds config option missing_value_fill_truncation. (thanks sirlark)
Avoid HTTP 301 Moved Permanently (thanks jean)
Add a Django response method (thanks inlanger)
Fix setup.py (#170)
Fix format error on list like in table
Add legend_at_bottom_columns option to specify number of columns in legend when at bottom. (#157)
Fix secondary interpolation (#165)
Adds an extra class (axis) to horizontal guides if the label is "0" (#147) (thanks sirlark)
Add line stroke customization parameters to style.py (#154) (thanks blakev)
V 1.5.1
Add `stack_from_top` option to reverse stack graph data order
Minor fix for empty logarithmic chart
Reorders axes in SVG output. Fix #145 (thanks sirlark)
V 1.5.0
Add per serie configuration
Add half pie (thanks philt2001)
Make lxml an optionnal dependency (huge speed boost in pypy)
Add render_table (WIP)
Support colors in rgb / rgba for parametric styles
V 1.4.6
Add support for \n separated multiline titles (thanks sirlark)
New show_only_major_dots option (thanks Le-Stagiaire)
Remove 16 colors limitation
Fix 0 in range (thanks elpaso)
V 1.4.5
Fix y_labels map iterator exhaustion in python 3
V 1.4.4
Fix division by zero in spark text (thanks laserpony)
Fix config metaclass problem in python 3
Fix --version in pygal_gen
V 1.4.3
Allow arbitrary number of x-labels on line plot (thanks nsmgr8)
V 1.4.2
Fix broken tests
V 1.4.1
Fix value formatting in maps
V 1.4.0
Finally a changelog !
Hopefully fix weird major scale algorithm
Add options to customize major labels (y_labels_major, y_labels_major_every, y_labels_major_count)
Css can now be inline with the "inline:" prefix
Visited links bug fixed
Add french maps by department and region (This will be externalized in an extension later)
V 1.3.x
Whisker Box Plot
Python 3 fix
DateY X axis formatting (x_label_format)