Update Plugin version and lower platform versions (#2)

Package.resolved

@@ -5,17 +5,17 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/0xOpenBytes/o",
       "state" : {
-        "revision" : "7751d08c5db1c7e4f339289dce1e92b033114ffd",
-        "version" : "1.0.0"
+        "revision" : "7e3aafa62705697a04db410bffc915e37e791649",
+        "version" : "1.0.1"
       }
     },
     {
       "identity" : "plugin",
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/0xLeif/Plugin",
       "state" : {
-        "revision" : "ddae9f8ce0ef8cda0f66cffd791a90a5b3f6684e",
-        "version" : "0.1.1"
+        "revision" : "adae34d16635f5e98f4a0b2728c465910a08e7c3",
+        "version" : "0.2.0"
       }
     },
     {

Package.swift

@@ -6,10 +6,10 @@ import PackageDescription
 let package = Package(
     name: "Scribe",
     platforms: [
-        .macOS(.v12),
-        .iOS(.v15),
-        .watchOS(.v8),
-        .tvOS(.v15)
+        .macOS(.v11),
+        .iOS(.v14),
+        .watchOS(.v7),
+        .tvOS(.v14)
     ],
     products: [
         // Products define the executables and libraries a package produces, and make them visible to other packages.
@@ -21,7 +21,7 @@ let package = Package(
     dependencies: [
         // Dependencies declare other packages that this package depends on.
          .package(url: "https://github.com/apple/swift-log", from: "1.5.2"),
-         .package(url: "https://github.com/0xLeif/Plugin", from: "0.1.0"),
+         .package(url: "https://github.com/0xLeif/Plugin", from: "0.2.0"),
          .package(url: "https://github.com/0xOpenBytes/o", from: "1.0.0")
     ],
     targets: [

Sources/Scribe/Scribe.swift

@@ -23,12 +23,6 @@ open class Scribe: Pluginable {
     /// An alias for Logger.Metadata.
     public typealias Metadata = Logger.Metadata
 
-    /// A key path property to represent immutability.
-    var immutable: Void {
-        get { () }
-        set { }
-    }
-
     /// The private logger used by Scribe.
     private let logger: Logger
     /// The plugins attached to Scribe.