[new release] yojson and yojson-bench (2.0.0)

[panglesd]

Yojson is an optimized parsing and printing library for the JSON format

• Project page: https://github.com/ocaml-community/yojson
• Documentation: https://ocaml-community.github.io/yojson/

CHANGES:

Removed

• Removed dependency on easy-format and removed pretty_format from
  Yojson, Yojson.Basic, Yojson.Safe and Yojson.Raw. (@c-cube, remove dep on easy-format ocaml-community/yojson#90)
• Removed dependency on biniou, simplifying the chain of dependencies. This
  changes some APIs:
  • Bi_outbuf.t in signatures is replaced with Buffer.t
  • to_outbuf becomes to_buffer and stream_to_outbuf becomes
    stream_to_buffer
    (@Leonidas-from-XIV, Remove hard dependency on Biniou ocaml-community/yojson#74, and @gasche, lib/write: more regular usage protocol for ?buf parameters ocaml-community/yojson#132)
• Removed yojson-biniou library
• Removed deprecated json type aliasing type t which has been available
  since 1.6.0 (@Leonidas-from-XIV, Remove json type ocaml-community/yojson#100).
• Removed json_max type (@Leonidas-from-XIV, Remove json_max type ocaml-community/yojson#103)
• Removed constraint that the "root" value being rendered (via either
  pretty_print or to_string) must be an object or array. (@cemerick, pretty_print raises errors when asked to print any value other than an array or object ocaml-community/yojson#121)
• Removed validate_json as it only made sense if the type was called json.
  (@Leonidas-from-XIV, Remove validate_json ocaml-community/yojson#137)

Add

• Add an opam package yojson-bench to deal with benchmarks dependency
  (@tmcgilchrist, Add bench dependencies on core and core_bench. ocaml-community/yojson#117)
• Add a benchmark to judge the respective performance of providing a buffer vs
  letting Yojson create an internal (Add benchmark for running to_channel with a preallocated buffer ocaml-community/yojson#134, @Leonidas-from-XIV)
• Add an optional suf keyword argument was added to functions that write
  serialized JSON, thus allowing NDJSON output. Most functions default to not
  adding any suffix except for to_file (Making to_string generate POSIX-compliant files ocaml-community/yojson#124, @panglesd) and functions
  writing sequences of values where the default is \n (Add a configurable suf separator ocaml-community/yojson#135,
  @Leonidas-from-XIV)

Change

• The stream_from_* and stream_to_* functions now use a Seq.t instead of a
  Stream.t, and they are renamed into seq_from_* and seq_to_* (@gasche, Stream to Seq ocaml-community/yojson#131).

Fix

• Avoid copying unnecessarily large amounts of strings when parsing (Avoid full copy of buffer in reading json ocaml-community/yojson#85, Avoid full buffer copy in map_lexeme ocaml-community/yojson#108,
  @Leonidas-from-XIV)
• Fix stream_to_file (Stream fixes ocaml-community/yojson#133, @tcoopman and @gasche)

[mseri]

We need a separate PR with upper bounds for the broken packages. I'll try to work on it by the mid of next week, then we can rebase and re-run the CI

[Leonidas-from-XIV]

What are the advantages of doing that as a separate PR versus adding the constraints in this PR?

[mseri]

The ci will be faster to deal with a few separate PRs than having all of them and all their revdeps added to the already high number of revdeps of yojson

[Leonidas-from-XIV]

Ok, that makes sense (though looking at the revdep failures I think a lot of them are transitive failures of atd). I'll go through the list and create some PRs to update the API.

[mseri]

@panglesd could you rebase on the current master and force push?

[panglesd]

Sure!

[mseri]

@panglesd can you do a new rebase?

[Leonidas-from-XIV]

Ah, looks like we missed merlin somehow. Should I make a separate PR or should I drop it in here?

[mseri]

If it is just merlin and calculon, let's do it here

[mseri]

Fantastic, thanks for the patience and all the help!