use configuration file for logging
code clean
try to unload useless assets before playing credits/intro
Merge origin/master
Add animation conversion for boost blue maki and ned fly.
Add natir credits.
Merge commit
Some litle corrections.
Merge branch 'master' of gitlab.pierre.marijon.fr:ned-et-les-maki/ned-et-les-maki
Base time animation 0.6 second, acceleration begin after 1 move and animation is 0.3 second