Shape-Out 2.2.3

• fix: update Quick View plot when values for the Young's modulus
  computation are changed (#44)
• fix: use fixed point size in Block Matrix
• enh: improve plot matrix column/row visualization and show flow
  rate (#45)
• docs: update visualization of Young's modulus look-up tables
  using new figure script from dclab
• build: bump Python to 3.8 for Windows builds
• setup: bump dclab from 0.27.5 to 0.27.11 (improvement of hierarchy
  child handling)