* introducing a thread-local parser
* adding functionality to release the memory
* some more documentation.
* fixing build
* adding benchmarks for 'from'
* generalizing the code somewhat.
* adding tests, fixing the benchmark (now with arrays and streams), and a
minor update to document_stream
* adding missing files (I forgot to check them).
* We cannot use [[nodiscard]] without guarding it, it is C++17
* fixing the cmake
* marking it as experimental
* removing ranges support (it is too experimental)
* putting back documentation.
* guarding SIMDJSON_CONSTEVAL more carefully.
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Co-authored-by: Daniel Lemire <dlemire@lemire.me>
Daniel Lemire