Release v1.2.3

Package

• Added {messydates} to Suggests
• Raised {manynet} floor to 2.3.1

Theming

• Added scale_x_mdate() and scale_y_mdate() (closes globalgov/messydates#104)
  • FUN resolves each messy date to one date; messydates::vmin by default
• Moved the colour checks into R/theme_aesthetics.R

Layouts

• Added check_crossings() for how many other ties each tie crosses
• Added check_slopes() for the slope each tie is drawn at
• Added check_lengths() for the total, max, and variance of tie lengths
• Added check_angles() for the angular resolution at each node
• Added check_drawing(), which reports those checks plus check_stress()

Tutorials

• Improved the isolate/bundling/backbone section ordering
• Each layout quality measure now names the function that measures it