UsbSerial 3.2

Updated jar file with the safeguards to null callbacks

UsbSerial 3.1

Minor fixes

UsbSerial 3.0

Ch34x driver fixed

UsbSerial 2.3

Added support for CH34x which are present in some Arduino clones.

UsbSerial 2.2

Added support for multi interface devices

UsbSerial 2.1

CDC driver bug fixed

UsbSerial 2.0

safeguards added in some devices

UsbSerial

1.2

Minor changes

Usb Serial

1.1

Issue #1 solved

UsbSerial

UsbSerial supports PL2303 chipsets too