namespace

I believe turtle does not handle quads, but our default serialization format for ConjunctiveGraph is turtle as turtle does not override the default for Graph, I guess we should probably change this, question is to what.

I think TriG would make most sense, but the other option is n3.

1. [ set key val nx px ] should be reply with "syntax error", but kvrocks can works
2. [ set key val px 1000 ex 1000 ] should be reply with "syntax error", but kvrocks can works.
3. redis supports [ set key val keepttl ], but kvrocks not supports

When creating a new user in Permission Manager, the username field suggests as an example Jane Doe, but if you write that you get an error message saying that the username is not valid:

![Screenshot 2021-08-13 at 10 15 28](https://user-images.githubusercont

It occurred to me that the testing I did with AirConcurrentMap could have been better validated if I had had a benchmark test against the SuggestionEngine.

This is relatively straightforward to do and folks can use the existing BenchmarkGSetFiltering code with minimal changes to achieve this. I'll leave this up if anyone wants to tackle it or else I'll do it myself.

Review those available from https://github.com/beberlei/assert and implement without including that library, since there's already quite a bit of overlap with WP's built-ins as well as Stringy