Note that HERE clips speeds to 130 kmph

[Nate-Wessel]

What this pull request accomplishes:

• Notes a quirk of the HERE dataset

Issue(s) this solves:

• adds to docs

What, in particular, needs to reviewed:

• facts

What needs to be done by a sysadmin after this PR is merged

NA

[Nate-Wessel]

This will return results:

SELECT *
FROM here.ta_path
WHERE max_spd = 130
LIMIT 1

This won't:

SELECT *
FROM here.ta_path
WHERE max_spd > 130
LIMIT 1