Bug#1057882: ITP: golang-github-howeyc-crc16 -- Implements the 16-bit cyclic redundancy check, or CRC-16, checksum

[tony mancill <tmancill@debian.org>]

Package: wnpp
Severity: wishlist
Owner: tony mancill <tmancill@debian.org>

* Package name    : golang-github-howeyc-crc16
  Version         : 0.0~git20171223.2b2a61e-1
  Upstream Author : Chris Howey
* URL             : https://github.com/howeyc/crc16
* License         : BSD-3-clause
  Programming Lang: Go
  Description     : Implements the 16-bit cyclic redundancy check, or CRC-16, checksum

 GoDoc (https://godoc.org/github.com/howeyc/crc16) Build Status
 (http://travis-ci.org/howeyc/crc16)
 .
 CRC16
 .
 A Go package implementing the 16-bit Cyclic Redundancy Check, or CRC-16,
 checksum.
 .
 Usage
 .
 To generate the hash of a byte slice, use the crc16.Checksum()
 (https://godoc.org/github.com/howeyc/crc16#Checksum) function:
 .
   import "github.com/howeyc/crc16"
 .
   data := byte("test")
   checksum := crc16.Checksum(data, crc16.IBMTable)
 .
 The package provides the following
 (https://godoc.org/github.com/howeyc/crc16#pkg-variables) hashing tables.
 For each of these tables, a shorthand can be used.
 .
   // This is the same as crc16.Checksum(data, crc16.IBMTable)
   checksum := crc16.ChecksumIBM(data)
 .
 Using the hash.Hash (https://godoc.org/hash#Hash) interface also works.
 .
   h := crc16.New(crc16.IBMTable)
   data := byte("test")
   data2 := byte("data")
   h.Write(data)
   h.Write(data2)
   checksum := h.Sum(nil)
 .
 Changelog
 .
  * 2017.03.27 - Added MBus checksum
  * 2017.05.27 - Added checksum function without XOR
  * 2017.12.08 - Implement encoding.BinaryMarshaler and
    encoding.BinaryUnmarshaler to allow saving and recreating their
    internal state.
--

The rationale for packaging is github.com/howeyc/crc16 is that it is a
dependency of github.com/harenber/ptc-go, which will permit enabling
PACTOR modem support in pat (winlink), as discussed in #1057276:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1057276