update flask-wtf to unreleased version to flush old cookies for lepture/flask-wtf#275
update flask-wtf to unreleased version to flush old cookies
for lepture/flask-wtf#275

spacedogXYZ/call-power,OpenSourceActivismTech/call-power,OpenSourceActivismTech/call-power,OpenSourceActivismTech/call-power,spacedogXYZ/call-power,OpenSourceActivismTech/call-power,spacedogXYZ/call-power,spacedogXYZ/call-power