Added newly required Swift Atomics dependency.

* Updated to Igis 1.4.0.
* Verified compilation for Swift 5.7.

Author: DBenYaakov

.gitignore

@@ -5,3 +5,5 @@
 Package.resolved
 .dir-locals.el
 *~
+\#*\#
+

Package.swift

@@ -13,11 +13,13 @@ let package = Package(
           targets: ["Scenes"]),
     ],
     dependencies: [
+      .package(url: "https://github.com/apple/swift-atomics.git", from: "1.0.2")
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.
         // Targets can depend on other targets in this package, and on products in packages which this package depends on.
         .target(
-          name: "Scenes"),
+          name: "Scenes",
+          dependencies: ["Atomics"])
     ]
 )

dylib.manifest

@@ -1 +1 @@
-Igis		1.3.7
+Igis		1.4.0