Add interval setting for lists and indent for blocks (SimonFairbairn#143

).

Done by https://github.com/ankstoo

README.md

@@ -233,6 +233,9 @@ strikethrough.fontStyle : FontStyle
 underlineLinks : Bool
 
 bullet : String
+
+listInterval : CGFloat
+blockIndent : CGFloat
 ```
 
 `FontStyle` is an enum with these cases: `normal`, `bold`, `italic`, and `bolditalic` to give you more precise control over how lines and character styles should look. For example, perhaps you want blockquotes to default to having the italic style:

Sources/SwiftyMarkdown/SwiftyMarkdown.swift

@@ -247,6 +247,10 @@ If that is not set, then the system default will be used.
 	open var strikethrough = BasicStyles()
 
 	public var bullet : String = "・"
+
+    public var listInterval: CGFloat = 30
+
+    public var blockIndent: CGFloat = 20
 
 	public var underlineLinks : Bool = false
 
@@ -498,17 +502,17 @@ extension SwiftyMarkdown {
 		case .codeblock:
 			lineProperties = body
 			let paragraphStyle = NSMutableParagraphStyle()
-			paragraphStyle.firstLineHeadIndent = 20.0
+			paragraphStyle.firstLineHeadIndent = self.blockIndent
 			attributes[.paragraphStyle] = paragraphStyle
 		case .blockquote:
 			lineProperties = self.blockquotes
 			let paragraphStyle = NSMutableParagraphStyle()
-			paragraphStyle.firstLineHeadIndent = 20.0
-			paragraphStyle.headIndent = 20.0
+			paragraphStyle.firstLineHeadIndent = self.blockIndent
+			paragraphStyle.headIndent = self.blockIndent
 			attributes[.paragraphStyle] = paragraphStyle
 		case .unorderedList, .unorderedListIndentFirstOrder, .unorderedListIndentSecondOrder, .orderedList, .orderedListIndentFirstOrder, .orderedListIndentSecondOrder:
 
-			let interval : CGFloat = 30
+			let interval : CGFloat = self.listInterval
 			var addition = interval
 			var indent = ""
 			switch line.lineStyle as! MarkdownLineStyle {