version 4.1.0

maybe fix hang on PIEthernet::interrupt()
replace piLetobe with piChangeEndian:
 * piChangeEndianBinary
 * piChangeBinary
 * piChangedBinary
PIDiagnostics::start now accept PISystemTime instead of number
add PITimer::start(PISystemTime, std::function<void()>) overload

libs/main/thread/pitimer.cpp

@@ -259,6 +259,14 @@ bool PITimer::start(PISystemTime interval) {
 }
 
 
+bool PITimer::start(PISystemTime interval, std::function<void()> func) {
+	if (isRunning()) stopAndWait();
+	setInterval(interval);
+	setSlot(func);
+	return start();
+}
+
+
 void PITimer::stopAndWait(PISystemTime timeout) {
 	stop();
 	thread->waitForFinish(timeout);