#114 Method for deleting multiple lines missing from editor

[Jepson]

The simple editor should allow deletion of multiple lines without issuing "!ra" multiple times. A resonable syntax would be "!ra 6-19".

If the person fixing this should feel ambitious, perhaps multiple ranges should be allowed. Maybe even open-ended. "!ra -2, 6-19, 27, 32-" would hence remove rows 1, 2, 6 through 19, 27 and everything from 32 to EOT.

I'm leaving this assigned to myself for the time being. With a bit of luck, I might even get around to fixing it.