liblxi v1.4

Changes since liblxi v1.3:

• Fix discover output strings

  Discovery of multiple LXI instruments revealed a bug in the id string
  handling which results in garbled output strings. Adding missing string
  termination fixes this.

• Add timeout handling for raw/TCP

• Update examples

• Cleanup

• Update README

• Add support for configurable protocol backends

  Reworked the code to support configurable protocol backends. Currently
  supported protocols include VXI11 and raw TCP. In the future support for
  HiSlip can be added.