Change add choice node to be similar to dialog

Changes the add choice node to have similar syntax to the set and append
dialog nodes.

CHANGELOG.md

@@ -26,6 +26,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   behaviour that it had in Rumor 3.X.
 * `choose` and `pause` now require the `{}` block syntax when specifying an
   amount of time.
+* `choice` no longer uses `>` to prefix every line; instead, it works similar
+  to `:` and `+` commands.
 
 ### Fixed
 * Injecting nodes clears the current yield and continues execution instead of

Compiler/Compiler.cs

@@ -118,17 +118,19 @@ public static partial class Compiler
 						// Parse the choice text
 						Parse.Whitespaces(state);
 						Parse.Indented(state);
-						var text = PrefixText(
-							Parse.Char('>').Then(Parse.Spaces)
-						)(state);
+
+						state.IndentIndex = state.Index;
+						Parse.Char('>')(state);
+						Parse.Whitespaces(state);
+						var text = Text(state);
 
 						// Consume the rest of the whitespace on this line
 						Parse.Spaces.Until(Parse.EOL)(state);
 
 						// Parse an optional indented block on the next line
 						var result = Parse.EOL
 							.Then(Parse.Whitespaces)
-							.Then(Parse.Indented)
+							.Then(Parse.Same)
 							.Then(Script)
 							.Maybe()(state)
 							.GetValueOrDefault(

Compiler/Tests/AddChoice.cs

@@ -45,7 +45,7 @@ public static void AddChoiceUnlabeledMultilineSuccess()
 			var state = new ParserState(
 				"choice\n" +
 				"  > Hello?\n" +
-				"  > Anyone there?\n" +
+				"    Anyone there?\n" +
 				"  : Hello!",
 				4
 			);
@@ -102,7 +102,7 @@ public static void AddChoiceLabeledMultilineSuccess()
 			var state = new ParserState(
 				"choice [choice1]\n" +
 				"  > Hello?\n" +
-				"  > Anyone there?\n" +
+				"    Anyone there?\n" +
 				"  : Hello!",
 				4, new RumorParserState()
 			);