Fixed font/size attributes which are not inherited correctly

[xdxavier]

add method will override all existing attributes.

let styleA = Style {
	$0.color = UIColor.white
	$0.size = 24
}

let styleB = Style {
	$0.color = UIColor.white
	$0.size = 14
}

let styleC = Style {
	$0.color = UIColor.red
}

let a = "hello".set(style: styleA)
let b = "world!".set(style: styleB)
let ab = (a + b).add(style: styleC)

the expected result of ab should keep different font size and append red color. But real result is reset font size and append red color.

p.s. version 2.0.1

[malcommac]

Fixed.
Now font and size are correctly inherited when not specified in a StyleProtocol instance. By setting font you are also setting its size; by passing size only SwiftRichString attempts to enumerate between the fonts of the attributed string by altering it along with the (optional) unique font attributes you have set.

The result of the code above is: