ptm 0.2.7

1. Added a NEWS.md file to track changes to the package.
2. Packages muscle, Biostrings and KEGGREST have been used conditionally.
3. url within the function get.area() has been updated to https://curie.utmb.edu/cgi-bin/getarea.cgi.
4. The structure of the data reported by the function meto.scan() has been simplified.

ptm 0.2.6

1. compute.dssp() has been deprecated, mkdssp can be used instead.
2. id.features(), pdb.uniprot() and uniprot.pdb() have been re-coded to accommodate the changes introduced into the new UniProt API.
3. get.go() has been sligtly modified to accommodate changes in the EMBL-EBI API.