[Cryptech Tech] Updated novena noise board

[Fredrik Thulin]

I have now updated the rev03 board with almost all the suggestions I've gotten 
from my kind reviewers Jacob, Peter, Pavel and bunnie.

I've also hopefully sorted out how to generate Gerbers properly - at least the 
attached Gerbers loads just fine with the nifty online 3D viewer at 
http://mayhewlabs.com/3dpcb (try it, really cool!) and online renderings from 
two PCB houses look OK, and it looks good (to me) with the 'gerbv' Linux 
viewer.

I'm not expecting more review, but if someone wants to take another look I 
won't object =).

One comment below:

On Friday, May 29, 2015 02:00:07 AM Jacob wrote:
...
> >> 6. Should design in some openings in the soldemask of the connector pads.
> >> As it is now, there is a danger of shorts during assembly.
> > 
> > Sorry, this one I don't understand?
> 
> If you look at the Soldermask and copper Gerbers where the big connector
> is mounted, you see that the Solder Mask (SM) for each connector pin is
> overlapping its neighbor, which means no soldermask dam between pins,
> which means a possible danger of solder shorts during assembly.

Thanks for all the good explanations and examples Jacob - I really appreciate 
it.

I think there are gaps in the solder mask (see attached picture), so I'm 
hoping this comment was due to bad Gerber generation earlier. I've checked the 
footprint in Eagle and the pads do have the "Stop" checkbox checked.

/Fredrik
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