[Definition] Add a #change_reason printed in debug
[Definition] Add a #change_reason printed in debug

dilumnavanjana/bundler,asutoshpalai/bundler,mvz/bundler,asutoshpalai/bundler,bundler/bundler,RochesterinNYC/bundler,RochesterinNYC/bundler,bundler/bundler,mvz/bundler,dilumnavanjana/bundler