Default params, wrapper functions and better call function

[mdbetancourt]

No description provided.

[ajpen]

Hey @Akhail. Thanks for contributing.

In what scenarios are these changes useful? Event functions themselves can be wrapped by decorators which is less susceptible to unexpected behavior IMO.

The idea of having default arguments may be useful however.
@nicolaiarocci what do you think?

[mdbetancourt]

@ajpen add in the README examples with the new features also now the functions are only called with the needed parameters