Added HPSDR Plugin project
Moved numProducerBuffers and readBufferSize to DeviceInterfaceBase
USBUtil updates to complete change from static methods to instance.  No more USBUtil:: calls.  Still needs lots of work to encapsulate different USB libraries
HPSDR plugin compiles.  Tested 2.0.0 to make sure hardware still works.  Now start testing plugin
Bug: Move USB initit out of constructor/destructor and into Connect/Disconnect
HPSDR Working!
Remove HPSDR internal device from Pebble, replaced with plugin
Added firmware files to HPSDR plugin
Adding latest HPSDR firmware files
Update default fw to 2.5
Removed LIBUSB_VERSION1 define, replaced with USB_LIB_TYPE in USBUtils.  WIP towards USB abstraction
Finished UsbUtil clean up for libusb, ftdi encapsulation will be done when we port ftdi devices to plugins
Sync with last UsbUtil changes
Cleaning up some warnings
Added HPSDR reference material, updated to latest USBUtil changes, couple of bug fixes
Cleanup and fixes so that 384k sample rate now works ok with minimum CPU
Usbutil cleanup to make sure return types are all correct
Update UsbUtil return types
Major update to all HPSDR constants and fixed broken tuning (always been broken) caused by incorrect Receiver # bit masks
Update to USBUtil, added progress bar for HPSDR firmware load, misc cleanup and comments.  Now works at 384k