message: Add a version number for the XLA code targetting jaxlib.
  There is likely a better long term solution, but this is an easy incremental
  improvement then.
diff: @@ -48,6 +48,9 @@ import numpy as np
  ops = _xla.ops
  profiler = _xla.profiler
  +# Just an internal arbitrary increasing number to help with backward-compatible
  +# changes.
  +_version = 1
  xla_platform_names = {
  'cpu': 'Host',
  