[winswitch] Xpra 1.0.3 won't launch on Mac OS X El Capitan? (10.11.6)

[Stroller]

> On 18 Feb 2017, at 10:10, Antoine Martin via shifter-users <shifter-users at lists.devloop.org.uk> wrote:
> 
> (snip)
>> I think it may have been OS X's "identified developers" Gatekeeper security settings, but I'm not sure.
> Yes, it could well be. I had signed version 1.0 and 1.0.1, but since I
> was told that this made no difference:
> https://xpra.org/trac/ticket/1340#comment:23
> I had not signed version 1.0.3 (the process is a royal pain)

Everything about Gatekeeper is a pain!