Tekton Pipeline Release v0.3.1 "Chartreux C-3PO" + bug fix

🐛 Tekton Pipelines with git ssh bug fixed 🐛

• Docs @ v0.3.1

• Examples @ v0.3.1

• 🐛 Fix git-init failures with git ssh credentials #803

• 🔨 Style improvements around omitempty (#798)

Thanks

• ❤️ @mgreau for the quick report!
• ❤️ @vdemeester for the quick fix!
• ❤️ @imjasonh for the omitempty fixes