`z.` is similar to zz but moves the cursor to the first non-blank
character.
From the documentation:
```
z. Redraw, line [count] at center of window (default cursor line). Put cursor at first non-blank in the line.
zz Like "z.", but leave the cursor in the same column.
```
Release Notes:
- Support the `z.` vim keybinding: Center cursor in window and put
cursor at first non-blank
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