Use vendoring for backward compatibility The switch of the Madon library to Go modules breaks builds with Go version < 1.11 since the import path now contains "v2". This patch adds vendoring so that it can still build with those versions. Let's try to re-enable Travis builds with Go v1.8-1.11...

# Setup a Global .gitignore for OS and editor generated files:
# https://help.github.com/articles/ignoring-files
# git config --global core.excludesfile ~/.gitignore_global

.vagrant
*.sublime-project