Add library evolution support

Author: Kyle-Ye

Package.swift

@@ -31,16 +31,30 @@ let isXcodeEnv = Context.environment["__CFBundleIdentifier"] == "com.apple.dt.Xc
 
 let development = envEnable("OPENGRAPHICS_DEVELOPMENT")
 
+// MARK: - [env] OPENGRAPHICS_COREGRAPHICS
+
 let coreGraphicsCondition = envEnable("OPENGRAPHICS_COREGRAPHICS", default: buildForDarwinPlatform)
 if coreGraphicsCondition {
     sharedSwiftSettings.append(.define("OPENGRAPHICS_COREGRAPHICS"))
 }
 
+// MARK: - [env] OPENGRAPHICS_WERROR
+
 let warningsAsErrorsCondition = envEnable("OPENGRAPHICS_WERROR", default: isXcodeEnv && development)
 if warningsAsErrorsCondition {
     sharedSwiftSettings.append(.unsafeFlags(["-warnings-as-errors"]))
 }
 
+// MARK: - [env] OPENGRAPHICS_LIBRARY_EVOLUTION
+
+let libraryEvolutionCondition = envEnable("OPENGRAPHICS_LIBRARY_EVOLUTION", default: buildForDarwinPlatform)
+
+if libraryEvolutionCondition {
+    // NOTE: -enable-library-evolution will cause module verify failure for `swift build`.
+    // Either set OPENGRAPHICS_LIBRARY_EVOLUTION=0 or add `-Xswiftc -no-verify-emitted-module-interface` after `swift build`
+    sharedSwiftSettings.append(.unsafeFlags(["-enable-library-evolution", "-no-verify-emitted-module-interface"]))
+}
+
 let package = Package(
     name: "OpenGraphics",
     products: [

Sources/OpenQuartzCore/CATransform3D.swift

@@ -6,7 +6,8 @@
 //  Modified from https://github.com/flowkey/UIKit-cross-platform/blob/7e28dc4c62d20afe03e55bbba660076ec06fd79a/Sources/CATransform3D.swift
 
 public import Foundation
-public import struct OpenGraphics.CGAffineTransform
+public import OpenGraphics
+import struct OpenGraphics.CGAffineTransform
 
 public struct CATransform3D: Sendable {
     public init(