fix: parse direct also inside init to make it work in programmatic usage

[beawar]

To keep the same interface between the arguments passed through the cli, and the arguments passed throught the programmatic usage, the declaration of the init function define the direct arg as a boolean.
This is not entirerly true in the usage from the cli, since inside the parse function, the direct argument is converted to a number (0 or Infinite).

In order to make both the usages work with the same interface for the args, the PR adds an additional function in charge of preparing the arguments for being used in the core logic.

Specifically for this case, the direct argument is converted from a boolean to an integer as done in the setDefaults for the cli usage, only when it arrives from the init as true, or as someting differnt from a number.

fixes #35

[RSeidelsohn]

Good improvement, thanks a lot!