Add ResetSelection binding to MusicWheel, add MusicWheel to Luadocs

Docs/Luadoc/Lua.xml

@@ -889,6 +889,10 @@
 		<Class base='ActorFrame' name='ModIconRow'>
 			<Function name='Load'/>
 		</Class>
+		<Class base='WheelBase' name='MusicWheel'>
+			<Function name='IsRouletting'/>
+			<Function name='ResetSelection'/>
+		</Class>
 		<Class base='Actor' name='Model'>
 			<Function name='GetDefaultAnimation'/>
 			<Function name='GetNumStates'/>

Docs/Luadoc/LuaDocumentation.xml

@@ -2609,6 +2609,14 @@ save yourself some time, copy this for undocumented things:
 		Loads the ModIconRow of Player <code>pn</code> from the Metrics in group <code>sMetricsGroup</code>.
 	</Function>
 </Class>
+<Class name='MusicWheel'>
+	<Function name='IsRouletting' return='bool' arguments=''>
+		Returns <code>true</code> if the MusicWheel is currently handling Roulette selection.
+	</Function>
+	<Function name='ResetSelection' return='bool' arguments=''>
+		Tries to set the MusicWheel's selection based on preferred song, preferred course, and current sort order. Returns <code>false</code> on failure.
+	</Function>
+</Class> 
 <Class name='NoteSkinManager'>
 	<Function name='GetMetricA' return='ActorCommand' arguments='string sElement, string sValue'>
 		Returns a command from the specified element and value.

src/MusicWheel.cpp

@@ -1619,10 +1619,12 @@ class LunaMusicWheel: public Luna<MusicWheel>
 {
 public:
 	static int IsRouletting( T* p, lua_State *L ){ lua_pushboolean( L, p->IsRouletting() ); return 1; }
+	static int ResetSelection( T* p, lua_State *L ){ lua_pushboolean( L, p->SelectSongOrCourse() ); return 1; }
 
 	LunaMusicWheel()
 	{
 		ADD_METHOD( IsRouletting );
+		ADD_METHOD( ResetSelection );
 	}
 };