New Code Completion

-=-=-=-=-=-=-=-=-=-

-Massive improvement to code completion
-Argument hinting for functions

If you manage to out-smart the code-completion in a situation where completion
should be possible to guess, let me know.

 Please enter the commit message for your changes. Lines starting

modules/gdscript/gd_tokenizer.cpp

@@ -110,7 +110,8 @@ const char* GDTokenizer::token_names[TK_MAX]={
 "':'",
 "'\\n'",
 "Error",
-"EOF"};
+"EOF",
+"Cursor"};
 
 const char *GDTokenizer::get_token_name(Token p_token) {
 
@@ -648,6 +649,9 @@ void GDTokenizerText::_advance() {
 				}
 
 			} break;
+			case 0xFFFF: {
+				_make_token(TK_CURSOR);
+			} break;
 			default: {
 
 				if (_is_number(GETCHAR(0)) || (GETCHAR(0)=='.' && _is_number(GETCHAR(1)))) {