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?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!* add a test for 0x1F bug
* numeric overflow in integers and double
* line and char offsets in the lexer and in error messages
* testing:
  a. the permuter
  b. some performance comparison against json_checker.
* investigate pull instead of push parsing
* Handle memory allocation failures gracefully
* cygwin/msys support on win32