Merge branch 'develop' into docs/review-fixes

Conflicts:
- include/nlohmann/json.hpp: took develop's removal of the UDLs (moved to json_literals.hpp, which already has the corrected @sa links)
- single_include/nlohmann/json.hpp: regenerated with make amalgamate
- docs/mkdocs/docs/api/operator_literal_json.md, operator_literal_json_pointer.md: kept the PR's migration guide link and develop's json_literals.hpp/JSON_NO_AUTOMATIC_UDLS note
- docs/mkdocs/docs/api/basic_json/to_bson.md: both sides added out_of_range.415; kept develop's example message and both version history lines
- docs/docset/docSet.sql: added JSON_NO_AUTOMATIC_UDLS (new on develop), which the PR's check_structure.py requires

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

README.md

@@ -1394,6 +1394,7 @@ THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR I
 - The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright © 2009 [Florian Loitsch](https://florian.loitsch.com/)
 - The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
 - The class contains parts of [Google Abseil](https://github.com/abseil/abseil-cpp) which is licensed under the [Apache 2.0 License](https://opensource.org/licenses/Apache-2.0).
+- The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright © 2021 The fast_float authors
 
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