* aws-s3-multipart: fix typo
This was doing a weird thing and probably causing more cancellation
bugs.
Flagged by lgtm.com
* form: fix comparison
* companion-client: fix use strict directive
* exclude meta the the Form plugin itself has added
* append new result to the previous one, instead of overwriting it
* add `replaceResultInFormWithNew` — replace result input value by default, with option to append
* talk about `replaceResultInFormWithNew`
* replaceResultInFormWithNew --> multipleResults