2 - correction of dev fonction

- move cran_submission scripts and todo.md to dev/ folder, it's better than top level

1 - changed and use parallel package. This way it works also on windows. And add a control of numeric input value.
2 - Correcting Author@R field  following CRAN advise

edges to agjacency and unipartite are visibly going wrong

value <- NULL
in the begining of the function
Didn't find better solution to clean CRAN checking namespaces insecurities (notes)