Change the type of the args list to String

[fhernandezn]

Hi there, I was reviewing the convertArgs function and I realized that if the type of the args list is changed to String instead of Object the method can be simplified. New values can still be parsed to string since args is a class field.

Thank you for reviewing this pull request, please let me know if you have any feedback related to my pull request.

[mention-bot]

By analyzing the blame information on this pull request, we identified @whoshuu, @RoyMontoya and @benohalloran to be potential reviewers

[coveralls]

Coverage decreased (-0.08%) to 67.488% when pulling fc285ac on frankweb:simplify-convert-args-method into a9d4b41 on satyan:master.

[sibelius]

thanks