Parse quoted strings correctly

When parsing quoted strings, space was not handled
properly in remaining arguments.

Fixes #186

src/Spectre.Console.Tests/Data/Commands/DumpRemainingCommand.cs

@@ -0,0 +1,39 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using Spectre.Console.Cli;
+
+namespace Spectre.Console.Tests.Data
+{
+    public sealed class DumpRemainingCommand : Command<EmptyCommandSettings>
+    {
+        private readonly IAnsiConsole _console;
+
+        public DumpRemainingCommand(IAnsiConsole console)
+        {
+            _console = console;
+        }
+
+        public override int Execute([NotNull] CommandContext context, [NotNull] EmptyCommandSettings settings)
+        {
+            if (context.Remaining.Raw.Count > 0)
+            {
+                _console.WriteLine("# Raw");
+                foreach (var item in context.Remaining.Raw)
+                {
+                    _console.WriteLine(item);
+                }
+            }
+
+            if (context.Remaining.Parsed.Count > 0)
+            {
+                _console.WriteLine("# Parsed");
+                foreach (var item in context.Remaining.Parsed)
+                {
+                    _console.WriteLine(string.Format("{0}={1}", item.Key, string.Join(",", item.Select(x => x))));
+                }
+            }
+
+            return 0;
+        }
+    }
+}

src/Spectre.Console.Tests/Data/Commands/InterceptingCommand.cs

@@ -1,22 +0,0 @@
-using System;
-using Spectre.Console.Cli;
-
-namespace Spectre.Console.Tests.Data
-{
-    public sealed class InterceptingCommand<TSettings> : Command<TSettings>
-    where TSettings : CommandSettings
-    {
-        private readonly Action<CommandContext, TSettings> _action;
-
-        public InterceptingCommand(Action<CommandContext, TSettings> action)
-        {
-            _action = action ?? throw new ArgumentNullException(nameof(action));
-        }
-
-        public override int Execute(CommandContext context, TSettings settings)
-        {
-            _action(context, settings);
-            return 0;
-        }
-    }
-}