hlzhang

Sadly, no tty on travis-ci or appveyor. GPG 2.1.11 comes with ubuntu 16.04 throw out a invalid error if I add 'pinentry-mode loopback' into ~/.gnupg/gpg.conf. Various versions of gpg wasted...

@netsafe Thanks for your advice. I use Gitlab CI/CD and Jenkins on private projects. Travis-CI is for public repositories. I've solved the GPG issues on Gitlab CI/CD, Travis-CI and AppVeyor,...