0.9.4

What's Changed

• CI Test with pytest<6.0 by @drewejohnson in #421
• DOC Update publications: main paper and AIAA NTP by @drewejohnson in #426
• Add infrastructure for testing plot methods by @drewejohnson in #429
• TST Allow CLI plot tolerance. Raise errors for failed plot tests by @drewejohnson in #431
• DEP Fix MPL colorbar norm deprecation by @drewejohnson in #430
• API Allow HomogUniv.plot to forward kwargs to mpl plots by @drewejohnson in #432
• CI Backport github actions to master by @drewejohnson in #439
• API Forward additional kwargs from sensitivity plot to matplotlib by @drewejohnson in #434
• Cherry pick 441 by @drewejohnson in #442
• DEV Support py39 by @drewejohnson in #444
• API Forward plot arguments from results reader to matplotlib by @drewejohnson in #446
• API Support Serpent 2.1.32; Default still 2.1.31 by @drewejohnson in #447
• Minor tweaks before 0.9.4 release candidates by @drewejohnson in #449
• REL Release candidate 0.9.4rc0 by @drewejohnson in #450
• BUG Support more values like psepc on xsplot reader by @drewejohnson in #456
• API Support spectrumPlot(..., by=None|"max") by @drewejohnson in #457
• REL: 0.9.4rc1 release by @drewejohnson in #459
• BUG Remove warning for ResultsReader on 2.1.32 by @drewejohnson in #460
• REL Release 0.9.4 by @drewejohnson in #461

Full Changelog: 0.9.3...0.9.4