trying a different filename for the executable, pyinstaller on travis doesn't seem to like this
trying a different filename for the executable, pyinstaller on travis doesn't seem to like this

maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex