### 0.0.17 Release

* Fixed #123 split RkiBundeslaenderService into two Services, one for bundeslaender and one for landkreise
* Fixed #128 add fields from csv to RkiLandkreiseImport
* Fixed #139 refactor RkiBundeslaenderServiceDownload to new method scheme introduced 07.02.2021
* Fixed #140 move WhoImport to RKI in: rk_service_import.py
* Fixed #125 implement RkiLandkreise
* Fixed #126 implement RkiBundeslaenderImport

### 0.0.18 Release
* Fixed #39 SQLalchemy instead of SQL: AllModelClasses.remove_all()
* Fixed #40 SQLalchemy instead of SQL: EcdcImport.get_date_rep()
* Fixed #41 SQLalchemy instead of SQL: EcdcImport.get_countries_of_continent()
* Fixed #107 SQLalchemy instead of SQL in: EcdcImport.get_countries_of_continent
* Fixed #109 SQLalchemy instead of SQL in: EcdcImport.get_date_rep
* Fixed #110 SQLalchemy instead of SQL in: EcdcImport.get_continent

src/database.py

 from flask import Flask
 from flask_cors import CORS
+from flask_bs4 import Bootstrap
 from flask_sqlalchemy import SQLAlchemy
 from logging.config import dictConfig
 from flask_admin import Admin
 
-app = Flask('app')
-CORS(app)
-app.config.from_object("config")
-port = app.config['PORT']
-ITEMS_PER_PAGE = app.config['ITEMS_PER_PAGE']
-DB_URL = 'postgresql+psycopg2://{user}:{pw}@{url}/{db}'.format(
-    user=app.config['POSTGRES_USER'],
-    pw=app.config['POSTGRES_PW'],
-    url=app.config['POSTGRES_URL'],
-    db=app.config['POSTGRES_DB'])
-app.config['SQLALCHEMY_DATABASE_URI'] = DB_URL
-app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False  # silence the deprecation warning
-run_run_with_debug = app.config['APP_DEBUGGER_ACTIVE']
-app.config['FLASK_ADMIN_SWATCH'] = 'superhero'
+
+def create_app():
+    app = Flask('app')
+    CORS(app)
+    Bootstrap(app)
+    app.config.from_object("config")
+    DB_URL = 'postgresql+psycopg2://{user}:{pw}@{url}/{db}'.format(
+        user=app.config['POSTGRES_USER'],
+        pw=app.config['POSTGRES_PW'],
+        url=app.config['POSTGRES_URL'],
+        db=app.config['POSTGRES_DB'])
+    app.config['SQLALCHEMY_DATABASE_URI'] = DB_URL
+    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False  # silence the deprecation warning
+    app.config['FLASK_ADMIN_SWATCH'] = 'superhero'
+    return app
+
+
+app = create_app()
 admin = Admin(app, name='covid19admin', template_mode='bootstrap4')
 db = SQLAlchemy(app)
 db.create_all()
 
+port = app.config['PORT']
+run_run_with_debug = app.config['APP_DEBUGGER_ACTIVE']
+ITEMS_PER_PAGE = app.config['ITEMS_PER_PAGE']
+
 my_logging_config = {
         'version': 1,
         'formatters': {'default': {