v0.15.0

StatsPlots v0.15.0

Diff since v0.14.34

Closed issues:

• Horizontal boxplot (#251)
• marginalkde throwing "MethodError: no method matching getindex" (#433)
• Unsatisfiable requirements detected when installing on brand new Julia1.7 and empty project (#500)
• Cannot install on Julia-1.8.0-rc1, even on a fresh empty %JULIA_DEPOT_PATH% (#501)

Merged pull requests:

• Marginally more performant broadcast (#503) (@BioTurboNick)
• Relax test tolerance - rework ci (#506) (@t-bltg)
• bump minor (#507) (@t-bltg)