added keywords

src/Highlighter.cpp

@@ -7,7 +7,7 @@ namespace groove {
 	std::vector<std::pair<std::regex, ncurses::Colors>> Highlighter::list = {
 			make_pair("([+-.<>,;=!:])", ncurses::Colors::CYAN),
 			make_pair("([\\{\\}\\[\\]\\(\\)])", ncurses::Colors::GREEN),
-			make_pair("(while|if|try|catch|void|this|char|bool|unsigned|long|short|int|return)\\*?", ncurses::Colors::MAGENTA),
+			make_pair("(while|if|try|catch|void|this|namespace|private|public|protected|class|char|bool|unsigned|long|short|int|return)\\*?", ncurses::Colors::MAGENTA),
 			make_pair("([a-zA-Z_][a-zA-Z_0-9]+)::", ncurses::Colors::GREEN),
 			make_pair("::([a-zA-Z_][a-zA-Z_0-9]+)", ncurses::Colors::CYAN),
 			make_pair("\\.([a-zA-Z_][a-zA-Z_0-9]+)", ncurses::Colors::CYAN),