0.3.4 0.3.3 - November 30, 2016

Fix examples that used invalid column data. (#81)
lxml is no longer imported by default. (#83)
Ordinal scales can now display data from multiple series with different values. (#76)
Better error handling for data types supported by different shapes.

0.3.2 - November 11, 2016

Add examples for many more use-cases. (#11)
Fixed bars so that data are displayed top-down when using :meth:`.Chart.add_bars`. (#72)
Changed default colors. (#51)
Fixed a rare file handling bug when saving SVG files.
Leather will now issue a warning if you attempt to render a chart with data exceeding the scale domain. (#42)
Linear scales will now default to the domain [0, 1] if no values are provided. (#66)
Axis no longer takes a number of ticks as an argument. Instead pass a list of custom tick values.
Scales tick methods no longer take a number of ticks as an argument. (They should self-optimize.)
Scales that cross 0 will now always have a tick at 0. (#54)
Implemented auto-ticking. (#23)
:func:`.style_function` now takes a :class:`.Datum` instances, rather than a list of arguments.
Renamed the Lines class to :class:`.Line` to be more accurate.
Implemented :class:`.CategorySeries`.
Implemented a more elegant pattern for colorizing series.
Refactored :class:`.Series` so :class:`.Shape` is no longer a parameter.
Tick values can now be overridden with the tick_values argument. (#56)
Added methods to customize scales and axes for :class:`.Lattice` charts. (#17)
Expanded unit tests for :class:`.Scale` subclasses.
Zero lines now render above other tick marks. (#31)
Fixed rendering of :class:`.Bar` and :class:`.Column` shapes for negative values. (#52)
Refactored the :class:`.Lattice` API.