How to update the Audio Processing Framework (APF) code.

Prerequisites: 'git subtree' (included in git >= 1.7.11, but only in "contrib")

WARNING: all of this should be done on the master branch!

# adding a remote:

git remote add -f apf https://github.com/AudioProcessingFramework/apf.git

# repository setup (only the very first time):

git subtree add --prefix=apf --squash apf/master

# pulling:

git fetch apf
git subtree merge --prefix=apf --squash apf/master

# pushing:

git subtree split --prefix=apf --annotate='(SSR) ' --branch apf-changes
git push apf apf-changes:master
