If you haven’t seen it already, you can find an introduction to the package in the Introduction vignette. You should be able to get to that with this.
The primary goal driving the creation of CECPfuns was selfish: to have a single repository of my functions that I could keep up to date and where I could easily find the latest version of any potentially reusable functions I have written. My first public posting about the package is here.
Two of my colleagues, Dr. Clara Paz and Emily Blackshaw have encouraged me to think that this might become something of use for others and I am now very much working toward that aim and, with that in mind I have put the package on GitHub at https://github.com/cpsyctc/CECPfuns.