0.12 release - Githubissues

Ready when all other issues forming part of the release are Done.

[x] change to stable version
[x] push to origin branch, create PR to upstream master
[x] check build, merge PR
[x] check build, create release in GitHub UI including releaseNotes, mentioning non-owner contributors, if any
[x] push nuget package
[x] copy release notes from GitHub to NuGet
[x] de-list beta nuget packages if present
[x] tweet, mentioning contributors and post link for easy retweeting ;-)
[x] post tweet in JabbR (Nancy, scriptcs, general-chat)
[x] increment minor version
[x] push to origin branch, create PR to upstream master
[x] check build, merge PR
[x] create a new milestone for the next release
[x] create new issue based on this one for next release, adding it to the new milestone
[x] close all issues on this milestone
[x] close this milestone

adamralph / scriptcs-nancy