Travis: include a new build for running tests with the developer version of VisPy
Travis: include a new build for running tests with the developer version of VisPy
astrofrog/glue-vispy-viewers,astrofrog/glue-3d-viewer,PennyQ/glue-3d-viewer,glue-viz/glue-3d-viewer,PennyQ/astro-vispy,glue-viz/glue-vispy-viewers