Added ability to specify more than one TEMPLATE_FLAVOR (Primary plus others)
Added ability for all TEMPLATE_FLAVORS and others to be able to hook into scripts (pre / post)
Addeed tests for above functionality
With these changes TEMPLATE_FLAVORS can be self contained and not polute code space
Added a few more whonix replacement tweaks
Updated umount_kill.sh to be able to umount directories that have been deleted
Added a DEBUG feature to save / use already created debootstrap image to save time debugging