Make version changes for the main branch, and add upgrade path

Author: cmcgee1024

Sources/Swiftly/Init.swift

@@ -40,10 +40,11 @@ internal struct Init: SwiftlyCommand {
         if var config, !overwrite &&
             (
                 config.version == SwiftlyVersion(major: 0, minor: 4, patch: 0, suffix: "dev") ||
-                    config.version == SwiftlyVersion(major: 0, minor: 4, patch: 0)
+                    config.version == SwiftlyVersion(major: 0, minor: 4, patch: 0) ||
+                    config.version.major == 1 && config.version.minor == 0
             )
         {
-            // This is a simple upgrade from the 0.4.0-dev pre-release, or 0.4.0 release
+            // This is a simple upgrade from the 0.4.0 pre-releases, or 1.x
 
             // Move our executable over to the correct place
             try Swiftly.currentPlatform.installSwiftlyBin()

Sources/SwiftlyCore/SwiftlyCore.swift

@@ -1,6 +1,6 @@
 import Foundation
 
-public let version = SwiftlyVersion(major: 1, minor: 0, patch: 0)
+public let version = SwiftlyVersion(major: 1, minor: 1, patch: 0, suffix: "-dev")
 
 /// A separate home directory to use for testing purposes. This overrides swiftly's default
 /// home directory location logic.