Search any text, not just node title
Currently it's only possible to search within node titles.
As pointed out in this request: https://mindmup.uservoice.com/forums/200447-what-should-we-focus-on-next/suggestions/15831034-search-within-notes-not-just-node-titles it would also be good to be able to search within the Notes, otherwise it significantly reduces the usefulness of the notes.
It's currently possible to add text to arrows/links right now too. Being able to search the text added to the arrows and links is also important.
The general rule should be that if text can be directly added in the tool, it should be searchable.