Changed contacts, rename node, corpus code file name to use input field
where enter confirms the edition.

Now focus works.

Now focus works.

Also, html code element edits text properly (no state, just refs which
prevents cursor jumping).

useAff cached to aggressively. Added refs for path comparison (this also
adds a requirement of Eq path to useLoader now).

Also, removed lots of duplicated code in Loader.purs and unified to have
only one loader.

Turns out the issue was also at parent getting rerenders.
So the trick is that I added an empty div with ref for parent node and,
next to it, the Graph component pointing to that ref.
Graph component calls react's usePortal with that parent ref and a small
'createElement' div to hold sigma canvases.

Well, it still does a bit because parent keeps rerendering but we can
manage that.

- range slider precision fix
- added edge size bounds
- fixed Globals 4.1.0 dependency (was 4.0.0 which was missing lots of
functions)
- upgraded purescript to 0.13.3 (has better error messages, with diff)