[Feature request] Add info about bash version used

[drwetter]

Which version are you referring to
3.0 + 3.2

Please check this repo whether this is a known feature request
no

Describe your feature request (if it's a technical feature)
For bug reports and to save time it would be useful to know which bash version the user was using. Sometimes they show minor differences.

Describe the solution you'd like
E.g. e cmd line switch or output in the banner

The template for bug reports should then be adjusted accordingly.