converted the rest!

samples/ranges/_ranges.rb

@@ -59,6 +59,6 @@ Squib::Deck.new(width: 825, height: 1125, cards: 3) do
     end
   end
 
-  rect color: 'black' # just a border
+  rect stroke_color: 'black' # just a border
   save_sheet prefix: 'ranges_', columns: 3
 end

samples/saves/_save_pdf.rb

@@ -3,7 +3,7 @@ require 'squib'
 Squib::Deck.new(cards: 8) do
   background color: :gray
   rect x: 37.5, y: 37.5, width: 750, height: 1050,
-       x_radius: 37.5, y_radius: 37.5, stroke: 3.0, dash: '4 4'
+       x_radius: 37.5, y_radius: 37.5, stroke_width: 2.0, dash: '4 4'
 
    # Tests for crop marks
    save_pdf file: 'crops-default.pdf', crop_marks: true

samples/saves/_saves.rb

@@ -5,7 +5,7 @@ require 'squib'
 Squib::Deck.new(width: 825, height: 1125, cards: 16) do
   background color: :gray
   rect x: 38, y: 38, width: 750, height: 1050,
-       x_radius: 38, y_radius: 38, stroke: 3.0, dash: '4 4'
+       x_radius: 38, y_radius: 38, stroke_width: 2.0, dash: '4 4'
 
   text str: (1..16).to_a, x: 220, y: 78, font: 'Arial 18'