Merge pull request #35 from toddbirchard/renovate/flask-wtf-0.x

Update dependency flask-wtf to v0.15.1

requirements.txt

@@ -6,7 +6,7 @@ flask-assets==2.0
 flask-login==0.5.0
 flask-sqlalchemy==2.4.4; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.4.0")
 flask-wtf==1.0.0
-flask==1.1.2; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.5.0")
+flask==2.0.0; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.5.0")
 idna==2.10; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 intervaltree==3.1.0; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0"
 itsdangerous==1.1.0; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0"