Several fixes for logging.
make log_level available from feather.yml.  Expand defaults in AppConfig.  Catch exception on missing feather.yml.
Write config file before starting apache.  Resolve root parameter to absolute path.
Major refactor:

- Dependency injection for apache service and general config.
- move httpd.conf file generation to apache service.
- use kherge/box for compiling a phar.
Use git version in phar builds.
Merge branch 'release/0.1.0'
Merge branch 'release/0.1.0' into develop
Merge branch 'release/0.1.1'