Correct the __init__ function to publish a new release

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  __init__

  __init__() function in your module would executes immediately after the module is loaded at runtime for the first time (i.e., it is only called once and only after all statements in the module have
  been executed). Because it is called after fully importing the module, __init__ functions of submodules will be executed first. Two typical uses of __init__ are calling runtime initialization
  functions of external C libraries and initializing global constants that involve pointers returned by external libraries. See the manual section about modules for more details.

  Examples
  ≡≡≡≡≡≡≡≡≡≡

  const foo_data_ptr = Ref{Ptr{Cvoid}}(0)
  function __init__()
      ccall((:foo_init, :libfoo), Cvoid, ())
      foo_data_ptr[] = ccall((:foo_data, :libfoo), Ptr{Cvoid}, ())
      nothing
  end