Version 0.2.2

Spatial map viewer addin:

• New addin provides a field-based viewer of nearest neighbor relationships.
  See the Visualizing spatial relationships tutorial for details.

Analysis addin:

• Phenotype definitions may include valid expressions such as ~`Membrane PDL1 (Opal 520) Mean`>5.

Bug fixes:

• Fix error during calculation of N/A and Total cell in cell seg summary report