Recording acted-on minibuffer candidates in minibuffer history

Confirming minibuffer input with ‘RET’ records the selected candidate in the appropriate history list. The user option ‘embark-record-minibuffer-history’ controls how Embark records acted-on candidates. This option accepts three kinds of values: ‘t’ (always record), ‘nil’ (never record), or ‘(skip ACTIONS...)’ to record for everything except the listed actions. The default is a ‘skip’ form that excludes meta commands such as ‘embark-export’.