[Issue 12784] Add an "in" operator for std.json.JSONValue

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12784

--- Comment #2 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/5a6b03a974ac6267060de278c76edeac0a01e6e6
Merge pull request #2194 from markisaa/jsonValueInOp

Issue 12784: Added an in operator to std.json.JSONValue. Tested when
const/non-const

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