Downgrade the swift-argument-parser (#5)

* Downgrade parser

Package.swift

@@ -30,7 +30,7 @@ let package = Package(
         // Dependencies declare other packages that this package depends on.
         .package(url: "https://github.com/Apodini/ApodiniTypeInformation.git", .upToNextMinor(from: "0.2.0")),
         .package(url: "https://github.com/kylef/PathKit.git", from: "1.0.1"),
-        .package(url: "https://github.com/apple/swift-argument-parser", from: "1.0.0"),
+        .package(url: "https://github.com/apple/swift-argument-parser", .upToNextMinor(from: "0.4.0")),
         .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0"),
         .package(url: "https://github.com/omochi/FineJSON.git", from: "1.14.0"),
         .package(url: "https://github.com/jpsim/Yams.git", from: "4.0.0")