How to get Log, Dict, XML, et al from Plex plugin __init__.py to Shared/Libraries

__init__.py

# Contents/Code/__init__.py
import bridge
import library

to_export = dict(Log = Log, Dict = Dict)
bridge.init(**to_export)

def Start():
  library.test()

bridge.py

# Contents/Libraries/Shared/bridge.py
config = dict()

def init(**kwargs):
  global config

  for key, value in kwargs.iteritems():
    if key in config: continue
    config[key] = value

library.py

# Contents/Libraries/Shared/library.py
import bridge

def test():
  # this will log to com.plexapp.plugin.foo.log
  bridge.config['Dict']['foo'] = 'bar'
  bridge.config['Log']('Dict[foo] is %s' % config['Dict']['foo'])