- The kubelet and the default docker runtime now support running ephemeral containers in the Linux process namespace of a target container. Other container runtimes must implement support for this feature before it will be available for that runtime. ([#84731](https://github.com/kubernetes/kubernetes/pull/84731), [@verb](https://github.com/verb)) [SIG Node]

* Rename `--cgroups-per-qos` to `--experimental-cgroups-per-qos` in Kubelet ([#36767](https://github.com/kubernetes/kubernetes/pull/36767), [@vishh](https://github.com/vishh))
* Implement CanMount() for gfsMounter for linux ([#36686](https://github.com/kubernetes/kubernetes/pull/36686), [@rkouj](https://github.com/rkouj))

pkg reflect, type Type interface, FieldByName(string) (StructField, bool)
pkg reflect, type Type interface, FieldByNameFunc(func(string) bool) (StructField, bool)
pkg reflect, type Type interface, Implements(Type) bool
pkg reflect, type Type interface, In(int) Type
pkg reflect, type Type interface, IsVariadic() bool
pkg reflect, type Type interface, Key() Type
pkg reflect, type Type interface, Kind() Kind

* Add link to Chinese article in [External Links](https://fastapi.tiangolo.com/external-links/). PR [810](https://github.com/tiangolo/fastapi/pull/810) by [@wxq0309](https://github.com/wxq0309).
* Implement `OAuth2AuthorizationCodeBearer` class. PR [#797](https://github.com/tiangolo/fastapi/pull/797) by [@kuwv](https://github.com/kuwv).

    * HostPortSyncer: operates only with one IP family, skipping portmap entries with different IP families
* Implement the documented API semantics of list-type and map-type atomic to reject non-atomic sub-types. ([#84722](https://github.com/kubernetes/kubernetes/pull/84722), [@sttts](https://github.com/sttts))

than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form.  A
"Major Component", in this context, means a major essential component