V.0.1.0 Codename Threadbare

Development branch for milestone v.0.1.0 Codename Threadbare.

Please keep using feature branches and merge them against v.0.1.0-codename-threadbare.

cmd/gosdn-tview/app/app.go

@@ -27,3 +27,7 @@ func (a *App) Run() error {
 func (a *App) Stop() {
 	a.app.Stop()
 }
+
+func (a *App) SetFocus(v tview.Primitive) {
+	a.app.SetFocus(v)
+}