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release 8.22.2

Backport PR #14360 on branch 8.22.x (Whats new 8.22.1, 8.22.2) (#14361) Backport PR #14360: Whats new 8.22.1, 8.22.2

Backport PR #14360: Whats new 8.22.1, 8.22.2

Reexport arg_split on emscripten. (#14356) Closes jupyterlite/demo#139

Reexport arg_split on emscripten. Closes jupyterlite/demo#139

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release 8.22.1

Depend upon traitlets >5.13.0 (#14353) In previous versions, `traitlets.List` does not inherit from `typing.Generic` which means it does not implement `__class_getitem__` which means [`List[ast.NodeTransformer]`](https://github.com/ipython/ipython/blob/8.22.0/IPython/core/interactiveshell.py#L331) raises at runtime.

Depend upon traitlets >5.13.0 Co-authored-by: Michał Krassowski <5832902+krassowski@users.noreply.github.com>

Depend upon traitlets >5.10.0 In previous versions, traitlets.List does not inherit from typing.Generic which means it does not implement __class_getitem__ which means List[ast.NodeTransformer] raises at runtime.

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release 8.22.0

What's new 8.22 (#14351)

IPython/utils/path.py: Deprecate unused `target_outdated`, `target_update` (#14348) These functions are unused. I propose to deprecate them (`setupbase.py` brings its own copy of these functions.)

What's new 8.22

Emit deprecations warnings

Minor typing and updates post new inspector API (#14349) See #14342

Minor typing and updates post new inspector API See #14342

Improve typing and MIME hook API for inspector (#14342) Fixes https://github.com/ipython/ipython/issues/14339 ### Additions Adds `InfoDict` type to improve the typing of `info()` result. Adds missing `"subclasses"` to `info_fields` list (these were added to the field list in https://github.com/ipython/ipython/pull/11486 but we forgot to update `info_fields` variable at the time) - the newly added `InfoDict` type will ensure that this won't happen again. Adds `InspectorHookData` dataclass which is passed to the MIME hooks which now should expect a single argument. Having a single dataclass argument enables us to deprecate individual fields, or add new fields without breaking the existing hooks. The old hooks will still work (if any are out there since this mechanism got just added in the previous point version). ### Deletions A comment over `info_fields` gets deleted: - Contrarily to the comment (which is getting deleted in this PR), `info_fields` were not defining the order of display since at least 2015 (https://github.com/ipython/ipython/pull/7903 - I did not feel the need to go further in the history to find when exactly it happened). - Also contrarily to this comment, current Jupyter messaging spec does not define the contents of `info_fields` (I guess this was lost during IPython/Jupyter split), but the newly added `InfoDict` at least properly annotates their type (if you know where I can find the old IPython messaging spec with the descriptions I can add these as doc comments). Unused `cast_unicode` import gets deleted. If someone imported it from here... well they really should not have. ### Deprecations - mime hooks taking two arguments (`obj, info`)