Imports of package jwriter

PathSynopsis
github.com/mailru/easyjson/bufferPackage buffer implements a buffer for serialization, consisting of a chain of []byte-s to reduce copying and to allow reuse of individual chunks.
ioPackage io provides basic interfaces to I/O primitives.
strconvPackage strconv implements conversions to and from string representations of basic data types.
unicode/utf8Package utf8 implements functions and constants to support text encoded in UTF-8.