The improvements include
* Using grep to evaluate results rather than simply pipelining them to less. As a result the script
is much less interactive and therefore much easier to run.
* Improved echoed descriptions of each task that is executed by the script.
Tested by: Alan W. Irwin <airwin@...> on Linux
(Debian Buster) by running the script (following the instructions
in README.Release_Manager_Cookbook) to make preliminary tests
of some uncommitted changes.