Included a references describing the methods into the package DESCRIPTION file
Cleaned up the code to make sure there is no console output if "verbose" is FALSE. popRF is the package to work with a raster files, therefore calculation can take some time and for a user convenience parameter "verbose" is TRUE by default .
Only the output which can not be suppressed in popRF package is from tuneRF function from randomeForest package. Even if "trace" paramenter is "False" in tuneRF function, there is a place where tuneRF function is using "cat" to print text (cat(Improve, improve, "\n")).
There were no ERRORs or WARNINGs after "R CMD check results"
22 July 2021
Omitted the licence file and the reference as it was advised by CRAN team member after first submution
Removed DOI: 10.5258/SOTON/WP00715 which was "Not Found"
There were no ERRORs or WARNINGs after "R CMD check results"
Tested on environments
Red Hat Enterprise Linux Server release 7.9 R-version 3.6.2