Adds support for digital clock

modules/digitalclock/display.go

@@ -0,0 +1,28 @@
+package digitalclock
+
+import "strings"
+
+func mergeLines(outString []string) string {
+	return strings.Join(outString[:], "\n")
+}
+
+func renderWidget(widgetSettings Settings) string {
+	outputStrings := []string{}
+	clockString, needBorder := renderClock(widgetSettings)
+	if needBorder {
+		outputStrings = append(outputStrings, mergeLines([]string{"", clockString, ""}))
+	} else {
+		outputStrings = append(outputStrings, clockString)
+	}
+	outputStrings = append(outputStrings, getDate())
+	outputStrings = append(outputStrings, getUTC())
+	outputStrings = append(outputStrings, getEpoch())
+	return mergeLines(outputStrings)
+}
+
+func (widget *Widget) display(dateFormat string, timeFormat string) {
+	widget.Redraw(func() (string, string, bool) {
+		return widget.CommonSettings().Title, renderWidget(*widget.settings), false
+	})
+
+}