- JSON log output is configurable and now supports writing info messages to stdout and error messages to stderr. Info messages can be buffered in memory. The default is to write both to stdout without buffering, as before. ([#104873](https://github.com/kubernetes/kubernetes/pull/104873), [@pohly](https://github.com/pohly))

pkg bufio, func NewReader(io.Reader) *Reader
pkg bufio, func NewReaderSize(io.Reader, int) *Reader
pkg bufio, func NewWriter(io.Writer) *Writer
pkg bufio, func NewWriterSize(io.Writer, int) *Writer
pkg bufio, method (*Reader) Buffered() int
pkg bufio, method (*Reader) Peek(int) ([]uint8, error)
pkg bufio, method (*Reader) Read([]uint8) (int, error)
pkg bufio, method (*Reader) ReadByte() (uint8, error)

pkg encoding/binary, const MaxVarintLen16 = 3
pkg encoding/binary, const MaxVarintLen32 = 5
pkg encoding/binary, const MaxVarintLen64 = 10
pkg encoding/csv, method (*Writer) Error() error
pkg encoding/json, method (*Decoder) Buffered() io.Reader
pkg encoding/json, method (*Decoder) UseNumber()
pkg encoding/json, method (Number) Float64() (float64, error)
pkg encoding/json, method (Number) Int64() (int64, error)