Fix an issue with decoding Violation without date

Package.swift

@@ -33,6 +33,7 @@ let package = Package(
     .target(
       name: "Core",
       dependencies: [
+        .product(name: "BetterCodable", package: "BetterCodable"),
         .product(name: "Rainbow", package: "Rainbow"),
       ]
     ),

Sources/Checkers/Lint.swift

@@ -137,6 +137,7 @@ public enum Lint {
   public static func runCustomScript(check: Check, command: String) throws -> LintResults {
     let tempScriptFileUrl = URL(fileURLWithPath: "_\(check.id).tempscript")
     try command.write(to: tempScriptFileUrl, atomically: true, encoding: .utf8)
+    try shellOut(to: "chmod", arguments: ["+x", tempScriptFileUrl.path])
 
     do {
       let output = try shellOut(to: "/bin/bash", arguments: [tempScriptFileUrl.path])

Sources/Configuration/Core+DefaultCodableStrategy.swift

@@ -10,6 +10,7 @@ extension Severity {
 }
 
 extension Regex {
+  /// Use to set the default value of `Regex` instances to `.*` in rules when users don't provide an explicit value.
   public enum DefaultToMatchAllArray: DefaultCodableStrategy {
     public static var defaultValue: [Regex] { [try! Regex(".*")] }
   }

Sources/Core/Extensions/Date+DefaultCodableStrategy.swift

@@ -0,0 +1,9 @@
+import Foundation
+import BetterCodable
+
+extension Date {
+  /// Use to set the default value of `Date` instances to `Date.now` in rules when users don't provide an explicit value.
+  public enum DefaultToNow: DefaultCodableStrategy {
+    public static var defaultValue: Date { Date() }
+  }
+}

Sources/Core/Violation.swift

@@ -1,9 +1,11 @@
 import Foundation
+import BetterCodable
 
 /// A violation found in a check.
 public struct Violation: Codable, Equatable {
   /// The exact time this violation was discovered. Needed for sorting purposes.
-  public let discoverDate: Date
+  @DefaultCodable<Date.DefaultToNow>
+  public var discoverDate: Date
 
   /// The matched string that violates the check.
   public let matchedString: String?