Added explicit boolean overloading for trace objects. Without this, Perl will use the object's string overloading and then check the truthiness of the returned string, which is a lot of extra work. This can produce significant slowdowns in some cases, as seen in https://github.com/plack/Plack/pull/697. Requested by Tatsuhiko Miyagawa. GH #23.
Module Install Instructions
To install Devel::StackTrace, copy and paste the appropriate command in to your terminal.