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Changes between Initial Version and Version 1 of Ticket #7583

initial	v1
7	7	1. we add a way to get the headers dict to `HttpResponse` (probably least preferable, since it's better for people to use `get()` there),
8	8	2. add something in the test client end to provide the headers dictionary, or
9		3. just remove that note from the docs.
	9	3. just remove that note from the docs and you have to know the header you're after (just like in normal code, I guess).
10	10
11	11	I'm going to be lazy and make this Somebody Else's Problem. Wanted to note it down whilst I remembered.