Use arrow keys in Perl debugger

Install this module:

cpan -f Term::ReadLine::Perl
cpan -f Term::ReadKey

Reference: https://stackoverflow.com/questions/13783334/arrow-up-and-down-does-not-work-any-more-in-perl-debugger-and-cpan-client

If you want use arrow keys in Python, use this:

pip install readline

Reference: https://stackoverflow.com/questions/10140198/python-debugger-pdb-stopped-handlying-up-down-arrows-shows-a-instead