As in SAX, features are boolean; properties have object values.
Features and properties are named by URIs.
All features are false by default.
Properties aren't used much.
public void setFeature(String name, boolean state)
throws XmlPullParserException;
public boolean getFeature(String name);
public void setProperty(String name, Object value)
throws XmlPullParserException;
public Object getProperty(String name);