If you got the error:
Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError) if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-tutorials_technology-medrectangle-3-0')}; Try to create a symbolic link to the new library:
ln -s /usr/local/opt/readline/lib/libreadline.8.0.dylib /usr/local/opt/readline/lib/libreadline.7.dylib
This is not the best solution, but give a try and in most of the cases will solve the issue. libreadline is very stable.