* Make rest sensor a little bit more flexible and allow the response to be a list with 0th element being a dictionary
* Black formatter wanted a different formatting
* Added test case for a list response with dict as 0th element
* Fixed lint error - it thinks a + STRING is an avoidance of using % sequences for log messages; I generally prefer explicit + rather than string juxtaposition for combining string literals, but sounds like that's not the standard
* Fixed test case -- I added it to the wrong scenario and need to use the one with json_attrs.