[Autocrypt] Level 1 autocrypt spec final PR

[holger krekel]

At this winter solstice day, a year after the Autocrypt
effort was founded at the OnionSpace in Berlin, it appears that
the first Autocrypt spec gets "1.0" final.  The according PR is here: 

https://github.com/autocrypt/autocrypt/pull/302

The according "Level 1" milestone shows "81 issues closed" and "0" open:
https://github.com/autocrypt/autocrypt/milestone/1

but fear not, we are not running out of issues. 
But let's hope that with this spec release we can 
contribute to "e-mail encryption solstice" ... :)

holger