New plugins + release automation

Changelog

b6f8ce4 Automate the release process 🤠 (#27)
43c8a00 Dumb ping plugin (#34)
a760803 Expose version on API (#31)
e4a744a Fix http-plugin config format (#28)
770f57a Fix shebang and makes script executable (#21)
f7bfc5e Get rid of weird and not posix compliant sed (#22)
510573d Implement Slack Notify feature (#10)
dd2d2e3 Improve goreport (#33)
8ecc5dd Improving utask dev stack (#23)
9570f38 Rework email plugin 💌 (#25)
fc4c1f6 duplicate reference to fizz package: s/wi2L/wI2L/ (#18)
8f08b11 feat(ui/dashboard): Add 'children' to steps list (#32)
b255c42 fix documentation + ready for release automation (#20)
8dbc219 update vendoring + bump mod go1.13 (#29)