feat: remove contrib package

BREAKING CHANGE: Every time a new user asks me how to use their
favorite framework together with stories and dependencies I understand
that there is a missing module in the contrib package.

See #192

.coveragerc

@@ -4,41 +4,17 @@ parallel = True
 source =
   _dependencies
   dependencies
-  django_project
-  examples
-  flask_project
+  app
   helpers
   mddoctest
   pkg
   tests
 
 [paths]
 source =
-  .tox/py27-django110/lib/python2.7/site-packages
-  .tox/py35-django110/lib/python3.5/site-packages
-  .tox/py27-django111/lib/python2.7/site-packages
-  .tox/py35-django111/lib/python3.5/site-packages
-  .tox/py36-django111/lib/python3.6/site-packages
-  .tox/py37-django111/lib/python3.7/site-packages
-  .tox/py35-django20/lib/python3.5/site-packages
-  .tox/py36-django20/lib/python3.6/site-packages
-  .tox/py37-django20/lib/python3.7/site-packages
-  .tox/py35-django21/lib/python3.5/site-packages
-  .tox/py36-django21/lib/python3.6/site-packages
-  .tox/py37-django21/lib/python3.7/site-packages
-  .tox/py35-django22/lib/python3.5/site-packages
-  .tox/py36-django22/lib/python3.6/site-packages
-  .tox/py37-django22/lib/python3.7/site-packages
-  .tox/py38-django22/lib/python3.8/site-packages
-  .tox/py36-django30/lib/python3.6/site-packages
-  .tox/py37-django30/lib/python3.7/site-packages
-  .tox/py38-django30/lib/python3.8/site-packages
-  .tox/py27-flask/lib/python2.7/site-packages
-  .tox/py35-flask/lib/python3.5/site-packages
-  .tox/py36-flask/lib/python3.6/site-packages
-  .tox/py37-flask/lib/python3.7/site-packages
-  .tox/py27-celery/lib/python2.7/site-packages
-  .tox/py35-celery/lib/python3.5/site-packages
-  .tox/py36-celery/lib/python3.6/site-packages
-  .tox/py37-celery/lib/python3.7/site-packages
+  .tox/py27/lib/python2.7/site-packages
+  .tox/py35/lib/python3.5/site-packages
+  .tox/py36/lib/python3.6/site-packages
+  .tox/py37/lib/python3.7/site-packages
+  .tox/py38/lib/python3.8/site-packages
   .tox/doctest/lib/python3.8/site-packages

.flake8

@@ -5,7 +5,6 @@ ban-relative-imports = True
 accept-encodings = utf-8
 exclude =
   .tox
-  migrations
   node_modules
+ignore = E741, W503
 per-file-ignores =
-  *.py: A003

.pre-commit-config.yaml

@@ -41,7 +41,6 @@ repos:
       - id: reorder-python-imports
         args:
           - "--application-directories=.:src:tests/helpers"
-        exclude: migrations
   - repo: https://github.com/myint/docformatter
     rev: ""
     hooks:
@@ -54,7 +53,6 @@ repos:
     rev: ""
     hooks:
       - id: black
-        exclude: migrations
   - repo: https://github.com/prettier/prettier
     rev: ""
     hooks:

README.md

@@ -32,7 +32,7 @@ Dependency injection without `dependencies`
 
 ```pycon
 
->>> from examples import Robot, Servo, Amplifier, Controller, Settings
+>>> from app.robot import Robot, Servo, Amplifier, Controller, Settings
 
 >>> robot = Robot(
 ...     servo=Servo(amplifier=Amplifier()),