Version 0.3.0

Mean of top 20 / bottom 10 addin:

• New addin helps to evaluate whether the staining quality is
  likely to produce good unmixing. See
  https://akoyabio.github.io/phenoptrReports/articles/top_20_bottom_10_report.html
  for details.

Staining consistency report:

• New addin creates a report showing mean expression of a selected marker
  across multiple samples.

Analysis addin:

• Fix problem computing mean expression for phenotypes with formulas
  in their definition #47
• Allow selecting (and reporting on) multiple score summary files #49
• Tabs with H-Score results include the scored marker name
  (in support of #49)

Spatial map viewer:

• Add support for selecting the desired view when the exported
  composite files contain multiple views.

Consolidate and summarize addin:

• Add a dummy Phenotype column if none is present #48

Merge addin:

• Read files to merge into memory and write once, instead of appending

Component levels report:

• Works correctly when "Export data from pairs plots" is checked #50