Change log for ethstats, the network traffic statistics utility

1.2.1	2018/05/17
	- fix a bashism in the check for feature-check
	- use single quotes and "--" in shell commands in the Makefile

1.2.0	2018/05/17
	- fix a Perl 6 bug: allow the ".", "/", and "-" characters in
	  an interface name
	- allow the program to be run directly during the tests
	- add the "--help" and "--version" long options
	- add the "--features" long option

1.1.1	2015/12/28
	- fix a grave bug I introduced in 1.1.0: get the correct value
	  for the number of packets sent out on an interface
	- add a trivial translation of ethstats to Perl 6
	- do not make all the warnings fatal, this is bad for
	  forwards-compatibility
	- use autovivification instead of an unwiedly defined-or
	- drop a needless sorting while fetching the interface stats
	- reduce the scope of some variables
	- update the "test" target in the Makefile: the Getopt::Tiny
	  module used by ethstats.p6 does not recognize clustered
	  single-letter options, so pass -V and -h separately
	- parametrize the "test" target and add the "test-p6" one

1.1.0	2015/12/11
	- use Getopt::Std for command-line option processing
	- add some command-line options besides the existing -t:
	  -C (color) or -M (monochrome)
	  -c (count)
	  -h (help)
	  -i interface to only poll a single interface
	  -n interval to specify the polling interval
	  -V (version)
	- add a simple Makefile
	- declare a 5.010 minimum Perl version dependency
	- update the Perl source style a bit:
	  - use strict mode and the warnings pragma
	  - reflow to a tab indent
	  - remove the unused tquad() and toquad() functions
	  - break the output formatting out into format_line()
	  - use the version module
	  - use fewer parentheses and quotes
	  - use a local variable for the input file stream
	  - use data structures instead of passing data in a herd of
	    global variables
	- add a mandoc manual page

1.0	(unknown)
	- released into the public domain by Drew Strieb

Contact: Peter Pentchev <roam@ringlet.net>
