Update requirements

requirements.txt

 alembic==1.4.0
+aniso8601==8.0.0
+attrs==19.3.0
 Click==7.0
 Flask==1.1.1
+importlib-metadata==1.5.0
 itsdangerous==1.1.0
 Jinja2==2.11.1
+jsonschema==3.2.0
 Mako==1.1.1
 MarkupSafe==1.1.1
+marshmallow==3.5.0
+marshmallow-sqlalchemy==0.22.2
 mo-future==3.47.20042
 pyparsing==2.3.1
+pyrsistent==0.15.7
 python-dateutil==2.8.1
 python-dotenv==0.11.0
 python-editor==1.0.4
+pytz==2019.3
 six==1.14.0
 SQLAlchemy==1.3.13
-Werkzeug==1.0.0
+webargs==5.5.3
+Werkzeug==0.16.1
+zipp==3.0.0