Add init(styles: StyleParameter...) to Color.Wrap.

As of `swift-600��.0.57.3`, the following statement errors:
«Extra argument 'style' in call»
`Color.Wrap(style: .Bold)`

Removing the supposedly "extra" argument 'style' errors:
«'().Type' does not have a member named 'Bold'»
`Color.Wrap(.Bold)`

The true problem appears to be the ambiguity between the
two functions of the form `init(foreground:background:style:)`.

`init(styles: StyleParameter...)` for `Color.Wrap` creates a non-ambiguous initializer.

Source/Color/Wrap.swift

@@ -75,6 +75,16 @@ public struct Wrap: SelectGraphicRenditionWrapType {
 		self.init(parameters: parameters)
 	}
 
+	public init(styles: StyleParameter...) {
+		var parameters: [Parameter] = []
+
+		for parameter in styles {
+			parameters.append(parameter)
+		}
+
+		self.init(parameters: parameters)
+	}
+
 	//------------------------------------------------------------------------------
 	// MARK: - SelectGraphicRenditionWrap
 	//------------------------------------------------------------------------------

Tests/PrettyColorsTests.swift

@@ -47,6 +47,10 @@ class PrettyColorsTests: XCTestCase {
 		Color.Wrap(foreground: nil as UInt8?, style: .Bold)
 		Color.Wrap(foreground: nil as Color.Named.Color?, style: .Bold)
 		[StyleParameter.Bold] as Color.Wrap
+		Color.Wrap(styles: .Bold)
+
+		// Multiple
+		Color.Wrap(styles: .Bold, .Blink)
 	}
 
 	func test_problem_TypeInference() {
@@ -182,6 +186,10 @@ class PrettyColorsTests: XCTestCase {
 			)
 		}(red)
 
+		XCTAssert(
+			red + Color.Wrap(styles: .Bold) == Color.Wrap(foreground: .Red, style: .Bold)
+		)
+
 		// Multiple
 		let _ = { (wrap: Color.Wrap) -> Void in
 			var formerlyRed = wrap
@@ -199,6 +207,10 @@ class PrettyColorsTests: XCTestCase {
 				formerlyRed == Color.Wrap(foreground: .Red, style: .Bold, .Italic)
 			)
 		}(red)
+
+		XCTAssert(
+			red + Color.Wrap(styles: .Bold, .Italic) == Color.Wrap(foreground: .Red, style: .Bold, .Italic)
+		)
 	}
 
 	func testMutableAppend() {