Attempted update to package manifest for SourceKittenDaemon

Package.swift

// swift-tools-version:5.0
import PackageDescription

var package = Package(
  name: "SourceKittenDaemon",

  dependencies: [
    .package(url: "https://github.com/Carthage/Commandant.git", Version(0, 12, 0)..<Version(0, 15, .max)),
    .package(url: "https://github.com/jpsim/SourceKitten.git", .upToNextMajor(from: "0.21.0")),
    .package(url: "https://github.com/envoy/Embassy.git", .upToNextMajor(from: "4.0.0")),
    .package(url: "https://github.com/felix91gr/XcodeEdit.git", .upToNextMajor(from: "1.0.0")),
  ],

  targets: [
    .target(name: "SourceKittenDaemon", path: "Sources/SourceKittenDaemon"),
    .target(
        name: "sourcekittend",
        dependencies: ["SourceKittenDaemon"],
        path: "Sources/sourcekittend"),
    .testTarget(
        name: "SourceKittenDaemonTests",
        dependencies: ["SourceKittenDaemon"],
        path: "Tests",
        exclude: ["Fixtures"]),
  ]
)

#if os(Linux)
package.dependencies.append(.package(url: "https://github.com/felix91gr/FileSystemWatcher.git",
        .upToNextMajor(from: "1.0.0")))
#endif