Version upgrade 0.3.2 to 1.0.0

funGp 1.0.0 (2024-05-09)

Main package life cycle updates

• This release accompanies the publication of the funGp in-depth manual
  in the Journal of Statistical Software: https://doi.org/10.18637/jss.v109.i05.

Minor documentation updates

• Maintainer email updated from djbetancourt@uninorte.edu.co to
  fungp.rpack@gmail.com to ensure a stable channel of
  communication with the community.

• A couple syntax fixes in the package notation to keep up with
  recent updates in Roxygen2.