Add GetInstanceActivity and GetInstancePeers

unixtime.go

@@ -0,0 +1,20 @@
+package mastodon
+
+import (
+	"strconv"
+	"time"
+)
+
+type Unixtime time.Time
+
+func (t *Unixtime) UnmarshalJSON(data []byte) error {
+	if len(data) > 0 && data[0] == '"' && data[len(data)-1] == '"' {
+		data = data[1 : len(data)-1]
+	}
+	ts, err := strconv.ParseInt(string(data), 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = Unixtime(time.Unix(ts, 0))
+	return nil
+}