padding doc

src/rendering.jl

@@ -319,6 +319,8 @@ generate a box, ellipse or squircle svg image
 * shape(ellipse, 80, 50, color="red") #80*50 red ellipse
 * shape(box, 80, 50, backgroundcolor=(0,1,0), backgroundsize=(100, 100)) #80*50 box on 100*100 green background
 * shape(squircle, 80, 50, outline=3, linecolor="red", backgroundcolor="gray") #add a red outline to the squircle
+outline: an Integer  
+padding: an Integer or a tuple of two Integers  
 """
 function shape(shape_, width, height, args...; 
     outline=0, linecolor="black", padding=0,

src/wc-helper.jl

@@ -20,6 +20,7 @@ load a img as mask, recolor, or resize, etc
 * loadmask("res/heart.jpg", transparent=rgba->maximum(rgba[1:3])*(rgba[4]/255)>128) #set transparent with a Function 
 * loadmask("res/heart.jpg", color="red", transparent=(1,1,1)) #set forecolor and transparent  
 * loadmask("res/heart.svg") #other arguments are not supported
+padding: an Integer or a tuple of two Integers  
 About orther keyword arguments like outline, linecolor, smoothness, see function `outline`.
 """
 function loadmask(img::AbstractMatrix{<:TransparentRGB}, args...;