Build fails in master due to coordinate repr changes

[cdeil]

The astropy/regions tests on travis-ci in master are failing for the two builds using Astropy dev:

https://travis-ci.org/astropy/regions/jobs/175035799#L743
https://travis-ci.org/astropy/regions/jobs/175035801#L745

Those are doctest changed because apparently the repr changed for SkyCoord. Example:

_______________________________ test_circle_sky ________________________________
    def test_circle_sky():
        center = SkyCoord(3 * u.deg, 4 * u.deg)
        reg = CircleSkyRegion(center, 2 * u.arcsec)
    
>       assert str(reg) == 'CircleSkyRegion\ncenter: <SkyCoord (ICRS): (ra, dec) in deg\n    (3.0, 4.0)>\nradius: 2.0 arcsec'
E       assert 'CircleSkyReg...s: 2.0 arcsec' == 'CircleSkyRegi...s: 2.0 arcsec'
E         Skipping 54 identical leading characters in diff, use -v to show
E            deg
E         -     ( 3.,  4.)>
E         ?      -   -
E         +     (3.0, 4.0)>
E         ?        +    +
E           radius: 2.0 arcsec

This is annoying because it makes the tests fail for all open PRs.

@bsipocz @astrofrog or anyone: suggestion how to modify (or remove?) the tests to fix this?
(I might have time to fix this on the weekend or Monday if it's clear what to do, but not today.)

[astrofrog]

Fixed in #71 already

[cdeil]

Great!

If #71 goes in the next few days, fine, no need to split it out.

[astrofrog]

Fixed in #71