Imports of package parser

PathSynopsis
bufioPackage bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O.
encoding/binaryPackage binary implements simple translation between numbers and byte sequences and encoding and decoding of varints.
errorsPackage errors implements functions to manipulate errors.
github.com/mongodb/mongo-go-driver/bson/decimal
github.com/mongodb/mongo-go-driver/bson/parser/ast
ioPackage io provides basic interfaces to I/O primitives.
mathPackage math provides basic constants and mathematical functions.