Pretty formatting of confidence intervals

```
formatCI(
ci,
sep = "; ",
prefix = "[",
suffix = "]",
digits = 2,
noZero = FALSE
)
```

## Arguments

- ci
A confidence interval (a vector of 2 elements; longer
vectors work, but I guess that wouldn't make sense).

- sep
The separator of the values, usually "; " or ", ".

- prefix, suffix
The prefix and suffix, usually a type of
opening and closing parenthesis/bracket.

- digits
The number of digits to which to round the values.

- noZero
Whether to strip the leading zero (before the decimal
point), as is typically done when following APA style and
displaying correlations, *p* values, and other numbers that cannot
reach 1 or more.

## Value

A character vector of one element.

## Examples

```
### With leading zero ...
formatCI(c(0.55, 0.021));
#> [1] "[0.55; 0.02]"
### ... and without
formatCI(c(0.55, 0.021), noZero=TRUE);
#> [1] "[.55; .02]"
```