piLagTester PRO: new features

 I've added a few new features for version 2.0. Quickly:

  1. graph now has tick-marks every 10 ms.
  2. press P to save a screenshot 
  3. press 1 or 2 to change the scale of the graph
  4. press Q or W to + / - the input lag threshold (default=5%)
  5. press A or S to + / - the full response threshold (default=80%)
  6. Press D to toggle dynamic contrast compensation / diagnostic test (default=off). 
  7. command line options:
-a <frames>: automatically record then quit
-x don't save/make .datx file
-r don't save/make .datr file
-l <fname>: save averages here (default=log.txt)




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