New release

Some minor bugfixes.

A new command to show the version of the editor, type "ver" or "version" in command line and press enter.

New line commands "c" (copy) and "m" (move) a single line "a" (after) or "b" (before) another line.

New command "del", "del all x" or "del all nx" to delete excluded or non-excluded lines.

Updated documentation, TeX and pdf file.