0.0.5

• Add stairs support
  [GitHub#38][GitHub#17]
  [Patch by @nanobowers]

• Add block canvas support
  [GitHub#39][GitHub#19]
  [Patch by @nanobowers]

• Add stemplot support
  [GitHub#40][GitHub#30]
  [Patch by @nanobowers]

• Add an example of animation
  [GitHub#33]
  [Patch by @mrkn and @kojix2]

• Fix interpolation bug of lineplot
  [GitHub#37][GitHub#32]
  [Patch by @nanobowers]
  [Reported by @Nakilon]

• Support color: option in render method
  [GitHub#45]

• Add canvas_types method
  [GitHub#44][GitHub#42]
  [Reported by @kojix2]

• Use appropriate message for invalid border types,
  and add border_types method
  [GitHub#43][GitHub#41]
  [Reported by @kojix2]

0.0.4

• Fix error by requiring stringio [#22]
• Use enumerable-statistics >= 2.0.1 to avoid a bug of histogram [#28]

0.0.3

• Add histogram support
• Add barplot! method
• Add scatterplot support
• Add densityplot support

0.0.2

• Add boxplot support

0.0.1

• Add barplot support
• Add lineplot support