Fixes #594 #272 #564

Also added missing (2.34) tag to end of the change log.
Couple of minor changes to output messages.

Fixes #630

Use a bash array to set several commands. (Commands use the usual syntax.)
The current syntax is unchanged when setting a single command.

A regexp to extract 'Subject Alternative Name' doesn't work when the domain use a minus character.

For grep regexp, to lose its special meaning inside brackets, the minus character must be placed in the first or last position in the list.

https://www.gnu.org/software/grep/manual/grep.html#Character-Classes-and-Bracket-Expressions

- use \n as delimiter for read to array
- use \n as delimiter for comparing SANs

Fixes #612

Fix bug with nslookup server param

Fixes #347 and #400

The dns query is often being reprinted as a comment as part of the drill/dig output
this caused multiple hits for the grep, making the comparison invalid.
Make sure we strip out comments before we look for the challenge text in the txt record.