As described in https://github.com/rtfpessoa/diff2html-cli/issues/113 we should probably [use spawn instead of exec](https://stackoverflow.com/questions/48698234/node-js-spawn-vs-execute) and parse the input as a stream.
As described in rtfpessoa/diff2html-cli#113 we should probably use spawn instead of exec and parse the input as a stream.