They can both be set independently now.
If the bootstrap mirror is not set, it falls back to the apt mirror,
which in turn falls back to the geo redirector.
New phase introduced "package installation" (fixes#114)
Apt source lines are now parsed, this allows to verify the target release of added packages.
All packages (except locales) are now installed *after* bootstrapping (fixes#123)
Added env argument to log_(check_)call
HostDependencies have been refactored a little