Can't locate JSON.pm in @INC

[eserte]

t/00-load.t and t/cmd-memo.t fail if JSON.pm is not installed --- probably a missing prereq specification or a missing skip in the tests.

Sample fail report at cpantesters: http://www.cpantesters.org/cpan/report/87e619d8-14fb-11ed-addc-e1a52cbfd570