Remove WWW entries moved into port Makefiles
Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
Approved by: portmgr (tcberner)
- Add a new port: finance/R-cran-plm
Panel data econometrics is obviously one of the main fields in the
profession, but most of the models used are difficult to estimate with
R. plm is a package for R which intends to make the estimation of
linear panel models straightforward. plm provides functions to
estimate a wide variety of models and to make (robust) inference.