* Migrate to go modules
* make vendor
* Update mvdan.cc/xurls
* make vendor
* Update code.gitea.io/git
* make fmt-check
* Update github.com/go-sql-driver/mysql
* make vendor
* Update makefile to use dep
* Migrate to dep
* Fix some deps
* Try to find a better version for golang.org/x/net
* Try to find a better version for golang.org/x/oauth2
* Add support for extra sendmail arguments
* Sendmail args to exec.command should be a list
* Add go-shellquote package
* Use go-shellquote lib for parsing Sendmail args
* Only parse if sendmail is configured
