Project Upgrade from older versions issues - std:: etc list

[danoli3]

Please add a list of any std::string or any std:: changes found in older projects upgrading to openFrameworks 12.0.0 or 12.1.0

Making a SED list for auto upgrading to be used in of upgrade myApps/projectX

missing headers etc List will be updated here:

string -> std::string
cout -> std::cout
cin -> std::cin

any associated headers with any uses too if extended