Fixed loads of oversights

- Forgot I used IList instead of List
- Introduced the Tracer class. This allows writing text to the terminal in Debug mode, regardless of if a Debugger is attached.
Added version to 0.2.101 (0.1 outputting the original .txt file)
- Default config settings (if no file is found) is now set in GetConfig()

Honestly, this turned out to be bigger than I anticipated, but I'm enjoying myself.

Tracer.cs

@@ -0,0 +1,66 @@
+// I hereby waive this project under the public domain - see UNLICENSE for details.
+namespace PublishTimes;
+
+/// <summary>
+/// Provides debug-only console output methods.
+/// These methods are only executed when the application is compiled in DEBUG mode.
+/// </summary>
+internal static class Tracer
+{
+    /// <summary>
+    /// Writes a line of text to the console, but only when in DEBUG mode.
+    /// </summary>
+    /// <param name="content">The text to write to the console.</param>
+    [Conditional("DEBUG")]
+    internal static void WriteLine(string content) =>
+        Console.WriteLine(content);
+
+    /// <summary>
+    /// Writes text to the console without a newline, but only when in DEBUG mode.
+    /// </summary>
+    /// <param name="content">The text to write to the console.</param>
+    [Conditional("DEBUG")]
+    internal static void Write(string content) =>
+        Console.Write(content);
+
+    /// <summary>
+    /// Writes multiple lines of text to the console, but only when in DEBUG mode.
+    /// </summary>
+    /// <param name="contents">A collection of text lines to write to the console.</param>
+    [Conditional("DEBUG")]
+    internal static void WriteLine(IEnumerable<string> contents)
+    {
+        foreach (var content in contents)
+        {
+            Console.WriteLine(content);
+        }
+    }
+
+    /// <summary>
+    /// Writes multiple text entries to the console without newlines, but only when in DEBUG mode.
+    /// </summary>
+    /// <param name="contents">A collection of text entries to write to the console.</param>
+    [Conditional("DEBUG")]
+    internal static void Write(IEnumerable<string> contents)
+    {
+        foreach (var content in contents)
+        {
+            Console.Write(content);
+        }
+    }
+
+    /// <summary>
+    /// Gets the current working directory in DEBUG mode or the application's base directory in release mode.
+    /// </summary>
+    internal static string AppDirectory
+    {
+        get
+        {
+#if DEBUG
+            return Directory.GetCurrentDirectory();
+#else
+  return  AppDomain.CurrentDomain.BaseDirectory;
+#endif
+        }
+    }
+}