[bitcoin-dev] request to use service bit 28 for testing

[Peter Todd via bitcoin-dev]

I'd like to use service bit 28 for testing the block compression
prototype unless anyone has any objections or is using it already.

Go for it!

AFAIK the only testing service bit in use right now is bit 26, used to
indicate full-RBF support by my replace-by-fee branch:

https://github.com/petertodd/bitcoin/tree/replace-by-fee-v0.11.2

Speaking of, you may find the preferential peering code in the above to
be useful. It's a bit of a hack, but it does work.