pkg syscall (darwin-arm64), func Fchmod(int, uint32) error
pkg syscall (darwin-arm64), func Fchown(int, int, int) error
pkg syscall (darwin-arm64), func FcntlFlock(uintptr, int, *Flock_t) error
pkg syscall (darwin-arm64), func Flock(int, int) error
pkg syscall (darwin-arm64), func FlushBpf //deprecated
pkg syscall (darwin-arm64), func FlushBpf(int) error
pkg syscall (darwin-arm64), func ForkExec(string, []string, *ProcAttr) (int, error)

```Python
async def do_something():
    try:
        yield something
    finally:
        some_cleanup()
```

...that way the `finally` block is run regardless of any exception that might happen.

### Features

pkg container/list, method (*List) MoveAfter(*Element, *Element)
pkg container/list, method (*List) MoveBefore(*Element, *Element)
pkg crypto, type PublicKey interface {}
pkg crypto/cipher, func NewGCM(Block) (AEAD, error)
pkg crypto/cipher, type AEAD interface { NonceSize, Open, Overhead, Seal }
pkg crypto/cipher, type AEAD interface, NonceSize() int

pkg syscall (freebsd-arm64), func Fchmod(int, uint32) error
pkg syscall (freebsd-arm64), func Fchown(int, int, int) error
pkg syscall (freebsd-arm64), func FcntlFlock(uintptr, int, *Flock_t) error
pkg syscall (freebsd-arm64), func Flock(int, int) error
pkg syscall (freebsd-arm64), func FlushBpf //deprecated
pkg syscall (freebsd-arm64), func FlushBpf(int) error
pkg syscall (freebsd-arm64), func ForkExec(string, []string, *ProcAttr) (int, error)

pkg syscall (netbsd-arm64-cgo), func Fchown(int, int, int) error
pkg syscall (netbsd-arm64-cgo), func FcntlFlock(uintptr, int, *Flock_t) error
pkg syscall (netbsd-arm64-cgo), func Flock(int, int) error
pkg syscall (netbsd-arm64-cgo), func FlushBpf(int) error
pkg syscall (netbsd-arm64-cgo), func ForkExec(string, []string, *ProcAttr) (int, error)

pkg syscall (freebsd-riscv64), func Fchown(int, int, int) error #53466
pkg syscall (freebsd-riscv64), func FcntlFlock(uintptr, int, *Flock_t) error #53466
pkg syscall (freebsd-riscv64), func Flock(int, int) error #53466
pkg syscall (freebsd-riscv64), func FlushBpf //deprecated #53466
pkg syscall (freebsd-riscv64), func FlushBpf(int) error #53466

*   Adds `Dataset.interleave` transformation.
*   Add `ConcatenateDataset` to concatenate two datasets.
*   Added Mobilenet support to TensorFlow for Poets training script.
*   Adds a block cache to the GCS filesystem with configurable block size and
    count.
*   SinhArcSinh bijector added.
*   Added `Dataset.list_files` API.
*   Introduces new operations and Python bindings for the Cloud TPU.

pkg crypto/x509, const UnknownSignatureAlgorithm = 0
pkg crypto/x509, func DecryptPEMBlock(*pem.Block, []uint8) ([]uint8, error)
pkg crypto/x509, func EncryptPEMBlock(io.Reader, string, []uint8, []uint8, PEMCipher) (*pem.Block, error)
pkg crypto/x509, func IsEncryptedPEMBlock(*pem.Block) bool
pkg crypto/x509, func ParseECPrivateKey([]uint8) (*ecdsa.PrivateKey, error)