wip modernize code base

yaml.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"net/url"
+)
+
+func (t *Targets) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	targets := []string{}
+	err := unmarshal(&targets)
+	if err != nil {
+		return err
+	}
+	*t = Targets{
+		targets: make([]*url.URL, len(targets)),
+	}
+	for i, u := range targets {
+		u, err := url.Parse(u)
+		if err != nil {
+			return err
+		}
+		t.targets[i] = u
+	}
+	return nil
+}