Rpackutils

-----

- RPACU-12 implement parallel downloads and Artifactory deployments
- RPACU-12 rpackmran is now way faster thanks to the mutiprocessing
implementation

-----

- RPACU-11 FIX the cURL command used to deploy to Artifactory

-----

- RPACU-10 Added rpackl function for listing dependencies

-----

- RPACU-9 Get Artifactory SSL Certificate and credentials from a file
- Add the wheel package to the dependencies list to build binary packages

-----

- RPACU-7 Adjust the python module to work with new Artifactory service
user settings

-----

- RPACU-8 Support SSL while connection to Artifactory