Text on 0.9.0 release

My ofApp.h includes:

public:
    ofTrueTypeFont myFont;

My ofApp.cpp includes:

void ofApp::setup(){
    ofTtfSettings settings("font.ttf", 40);
    settings.antialiased = true;
    settings.ranges = {
        ofUnicode::Latin1Supplement
    };
    myFont.load(settings);

Error message is as follows:

/home/pi/openFrameworks/apps/myApps/emptyExample/src/ofApp.cpp: In member function ‘virtual void ofApp::setup()’:
/home/pi/openFrameworks/apps/myApps/emptyExample/src/ofApp.cpp:12:2: error: ‘ofTtfSettings’ was not declared in this scope
  ofTtfSettings settings("font.ttf", 40);
  ^
/home/pi/openFrameworks/apps/myApps/emptyExample/src/ofApp.cpp:13:2: error: ‘settings’ was not declared in this scope
  settings.antialiased = true;
  ^
/home/pi/openFrameworks/apps/myApps/emptyExample/src/ofApp.cpp:15:3: error: ‘ofUnicode’ has not been declared
   ofUnicode::Latin1Supplement
   ^
/home/pi/openFrameworks/libs/openFrameworksCompiled/project/makefileCommon/compile.project.mk:199: recipe for target 'obj/linuxarmv6l/Release/src/ofApp.o' failed
make[1]: *** [obj/linuxarmv6l/Release/src/ofApp.o] Error 1