Receive an unique point and add it to a list in data["points"] (although it's an unnecesary overhead)

write_points calls write with data['points'], so write has to verify.

In queries like select count(value) from measuremente where ... group by * InfluxDB
doesn't set "columns" but the tag names and values are provided by the "tags" raw data.

If tags' dictionary is not empty it uses it as the initial dictionary, so it preserves
the key-values but they will be overriden by columns names... if they exists (not seen yet).