Drop Python 2.6 from appveyor (conda doesn't have colorama for py2.6 needed by tests)
Drop Python 2.6 from appveyor (conda doesn't have colorama for py2.6 needed by tests)

pv/asv,pv/asv,airspeed-velocity/asv,qwhelan/asv,spacetelescope/asv,qwhelan/asv,spacetelescope/asv,spacetelescope/asv,pv/asv,airspeed-velocity/asv,airspeed-velocity/asv,spacetelescope/asv,qwhelan/asv,qwhelan/asv,pv/asv,airspeed-velocity/asv