Release procedure

• Move unreleased changes in CHANGELOG to new version heading.
• Update source/docs/index.html to point to new ZIP file to download (NSubstitute-x.x.0.0.zip)
• Ensure BreakingChanges.txt up to date and move unreleased breaking changes to new version heading.
• Ensure Acknowledgements up to date.
• Make final commit and tag this commit as "vx.y.z" (z changes on patches, y on new features or minor changes to behaviour, x for breaking API changes).
• Build using: build.sh config=Release target=ALL deploy generate_docs. This will build to output/release.
• Test nuget package on a project using a local repository.
• Push final commit and tags to main repo.
• Upload release to github.
• Push release to nuget: nuget push (path_to_pkg).
• Publish website (built to output dir).
• Announce (mailing list, twitter, and unleash carrier pidgeons to spread the joyous news). Be sure to credit people who contributed to the release!
• ...
• Profit!

Note: I had trouble with jekyll v0.11.2 on Windows & Ruby193 (maruku would give undefined method errors). I had to gem install jekyll --version '0.11.0', and then uninstall version 0.11.2 of jekyll using gem uninstall jekyll to get it to work. I also had to gem install liquid --version '2.2.2' and uninstall the later version of that, as per this StackOverflow answer.