Prepare packing assets

Change-Id: I88762e434bf3d45b47afddffd719b3a4b2f326c0
Merge branch 'master' of github.com:djui/umf

* 'master' of github.com:djui/umf:
  First maze generator attempt
Improve packer

Change-Id: I9c7062c5fe408a3a33f4281a02746d5971bcc4f5
Add and play music

Change-Id: I7f3fb7105cdbc5a04e4c7518d6fee0f12caf09eb