Rename package and address warnings

Sources/SwiftUIMath/MathRender/MTBezierPath.swift

@@ -0,0 +1,35 @@
+
+//
+//  Created by Mike Griebling on 2022-12-31.
+//  Translated from an Objective-C implementation by 安志钢.
+//
+//  This software may be modified and distributed under the terms of the
+//  MIT license. See the LICENSE file for details.
+//
+
+import Foundation
+
+#if os(macOS)
+
+extension MTBezierPath {
+    func addLine(to point: CGPoint) {
+        self.line(to: point)
+    }
+}
+
+extension MTView {
+    
+    var backgroundColor:MTColor? {
+        get {
+            MTColor(cgColor: self.layer?.backgroundColor ?? MTColor.clear.cgColor)
+        }
+        set {
+            self.layer?.backgroundColor = MTColor.clear.cgColor
+            self.wantsLayer = true
+        }
+    }
+    
+}
+
+#endif
+