v0.4.0

What's Changed

• Update codecov by @samvanstroud in #280
• Added SV mass histograms using pion hypothesis by @jmw464 in #265
• Better looking error bars on stacked histograms by @nikitapond in #281
• Cosmetic update for ROCs, bump versions by @samvanstroud in #282
• Minor updates to plot_vertex_mass function by @jmw464 in #284
• Fix examples test by @samvanstroud in #287
• Adding colour-blind-friendly colours as default colours for taggers by @afroch in #286
• Improve roc cosmetics by @samvanstroud in #288
• Autohide labels that would cause formatting issues by @samvanstroud in #289
• Clean up docs by @samvanstroud in #290

Full Changelog: v0.3.6...v0.4.0