mik3y/usb-serial-for-android v3.7.3

on GitHub

fixes:

• improved error handling for read() with concurrent close() (#569).
  (reworked previous solution from change 8b9ad7e / v3.7.1 because closeInt() was not working any more)
• write() throws SerialTimeoutException if connection still valid, instead of IOException which is typically handled as connection lost
• SerialInputOutputManager.writeAsync() handles SerialTimeoutException internally