Drop Extension==dev requirement
Drop Extension==dev requirement

pip doesn't install links included in the description of projects
anymore. Therefore ==dev install doesn't work anymore.

drewja/flask,fkazimierczak/flask,fkazimierczak/flask,pallets/flask,pallets/flask,tristanfisher/flask,mitsuhiko/flask,drewja/flask,fkazimierczak/flask,pallets/flask,tristanfisher/flask,drewja/flask,mitsuhiko/flask