Issue 113: add a Ghost.open_nowait() API
Revert "Issue 113: add a Ghost.open_nowait() API"

This reverts commit 63b916f011089eeb79e6adc819c3aad51b60b81e.
Issue 113, try 2: add a 'wait' parameter to Ghost.open()
Merge pull request #114 from gjcarneiro/open_nowait

Issue 113: add a Ghost.open_nowait() API
Merge pull request #2 from jeanphix/master

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