Update swiftly version to 1.0.0 and add upgrade routine for 0.4.0#237

cmcgee1024 merged 1 commit intoswiftlang:release/1.0swiftlang/swiftly:release/1.0from

cmcgee1024:update_swiftly_verion_10cmcgee1024/swiftly:update_swiftly_verion_10Copy head branch name to clipboard