5

Enhancements based on feedback from .NI:

* Level 1: add the uppercase and lowercase letters
* Level 2: link the name of the letter and its image;
  for example: The XO says: "A" de "Ave", "E" de Elefante
* Change the background color to one of the XO colors
* Add visual to feedback for Levels 3 and 4
* Don't repeat letter until all letters seen

3

* GTK3 port by Ignacio Rodriguez

1

* New 'I Know My ABCs' activity