- Setting values now tries to preserve the existing order, rather than
just appending to the end.
- __repr__ now returns a repr of the tuple list. The old repr becomes a
.format() method. This is clearer, makes troubleshooting easier, and
doesn't assume all data in ODicts are header-like
Hi there,
I was getting a very weird error "ODict valuelist should be lists", when attempting to add a header.
My code was as followed:
```
msg.headers["API-Key"] = new_headers["API-Key"]
42 msg.headers["API-Sign"] = new_headers["API-Sign"]
```
In the end, that was because there could be multiple equal headers. In order to cater to that, it you guys might enjoy the patch I attach, for it converts strings automatically into lists of multiple headers.
I think it should work, but I haven't tested it :$
It'd allow me to have the above code, instead of this one below:
```
msg.headers["API-Key"] = [new_headers["API-Key"]]
42 msg.headers["API-Sign"] = [new_headers["API-Sign"]]
```
