Update version [2.0.3].

Typedef improvement.

Update version [2.0.2].

Merge pull request #4 from wbetterdev/fix-file-not-found-error

Fix "File does not exist at path" error

2.0.1

2.0.0

Add comments.

Modify the Event interface.

Modify the unlink and retry methods in the event callback.

Modify unlink and retry methods.

Modify the digIn method in the BasicUsage.

Change docs.

Change docs to v3.x

Modify the callback name and file argument.