Incorrect range for the dot command for visual mode

[tomlu]

To reproduce:

• Select N > 1 lines of text
• Press > to indent
• Press . to repeat indent.

Outcome: Only the first line will indent
Expected outcome: All N lines will indent

IME (from implementing another Vim emulator) the dot command cannot be implemented simply by recording. Rather, some object representing the last change command needs to be stored. This object needs to store information about the selection that it operates on, including size and whether it's line mode or not.