numbers-odd-even, minor, fixed copyright notice.
alphabet-sequence, new activity based on planegame.
core, Score can now be use to display a message

By writting to the message property instead of the levels one a
little message can be displayed.
planegame, improved the dataset to specify a showNext prop

The showNext property is used to specify if the next item to find
is displayed.
planegame, improved smooth of the plane at upper levels.
planegame, add an audio crash sound on wrong cloud.

Moved bonus.wav from planegame to core/resource/sounds