rearrange tests into alphabetical order
rearrange tests into alphabetical order

McCabeJM/pymdptoolbox,sawcordwell/pymdptoolbox,McCabeJM/pymdptoolbox,silgon/pymdptoolbox,yasserglez/pymdptoolbox,sawcordwell/pymdptoolbox,yasserglez/pymdptoolbox,silgon/pymdptoolbox