Handle <ESC>[{COUNT}A-F cursor control sequences

[keithpitt]

Cursor Up [{COUNT}A Moves the cursor up by COUNT rows; the default count is 1.

Cursor Down [{COUNT}B Moves the cursor down by COUNT rows; the default count is 1.

Cursor Forward [{COUNT}C Moves the cursor forward by COUNT columns; the default count is 1.

Cursor Backward [{COUNT}D Moves the cursor backward by COUNT columns; the default count is 1.

[keithpitt]

This has been fixed as well.