Change function name for getting name data from font to be more obvious

Add use of name data to example.py
Add additional fields to the maxp table
Correctly set the number of glyphs in a subfont
Adjust some extra information in a subfont

example.py

@@ -16,6 +16,7 @@ if __name__ == '__main__':
     print(t.faces[0].font_family)
     print(t.faces[0].name)
     print(t.faces[0].italic_angle)
+    print(t.faces[0].get_name_attr(10))
 
     subset = [ord('H'), ord('e'), ord('l'), ord('o')]
     font_subset = t.faces[0].make_subset(subset)