v0.12.6

AlgebraOfGraphics v0.12.6

Diff since v0.12.5

Merged pull requests:

• feat(legend): Hide unused legend entries by default (#742) (@jkrumbiegel)
• Prepare v0.12.6 (#743) (@jkrumbiegel)

Closed issues:

• Legend additionally shows marker for Lines and line for Scatter plot (#576)