v3.9.0

features:

• read() with timeout now allows unlimited read size for Android 9+
• SerialInputOutputManager now executes read and write in separate threads, so writeAsync is executed now immediately and not delayed any more until a read succeeded or timed out.

changes:

• before was possible to start SerialInputOutputManager with Executors.newSingleThreadExecutor().submit(ioManager). Now you have to use ioManager.start() as already used in the example.