fix: multiple services by one host get now indexed by the SRV name, not the PTR name.

[schuenep]

This allows to announce and find multiple services of the same type e.g. _http._tcp by one server.

Fixes #198

[schuenep]

Unfortunately I needed to change a little bit more, as the Name is used in the dictionary services in ZeroconfRecord.cs as the key and this key was used in multiple locations when finding a service of a specific type.
This also adds a breaking change to the public API. E.g. in our case we used the key on the return value of ResolveAsync.
If one wants the same functionality instead of service.key now service.Value.Name must be used.

[clairernovotny]

Few things:

1. Can you please review the readme.md to see if anything needs to be changed in the sample code given the updates?
2. Please add a note in the readme about this change and how to mitigate
3. Please bump the version.json to 3.6 as there's a minor break here

[schuenep]

Few things:

1. Can you please review the readme.md to see if anything needs to be changed in the sample code given the updates?
2. Please add a note in the readme about this change and how to mitigate
3. Please bump the version.json to 3.6 as there's a minor break here

1. I did not find anything that needs to be changed
2. Done, please have a look
3. Done

Also I did search for additional usages of the dictonary .Key inside the project and replaced them with .Value.Name. Please have a look.

[schuenep]

Hi, anything else I need to fix?

[clairernovotny]

I don't think so; just haven't had a chance to test it locally. Will try to get that done soon.