Issue with toRFC3339String bottom

[paulyoung]

> toRFC3339String bottom
(RFC3339String "000-271820-01-01T00:00:00.0Z")

Possibly due to bottom for Year being negative:

https://github.com/purescript/purescript-datetime/blob/ffdd94fa0c4ac5d89107b0437aece0556970dcef/src/Data/Date/Component.purs#L28

[paulyoung]

> import Data.PreciseDateTime.Internal (dateTimeFormatISO)
> import Data.Formatter.DateTime (format)
> format dateTimeFormatISO bottom
"000-271820-01-01T00:00:00"

[paulyoung]

I think this might be an issue with purescript-formatters.

> import Data.PreciseDateTime.Internal (dateFormat)
> show dateFormat
"(YearFull : (Placeholder \"-\") : MonthTwoDigits : (Placeholder \"-\") : DayOfMonthTwoDigits : Nil)"
> format dateFormat bottom
"000-271820-01-01"

[paulyoung]

> import Data.Formatter.DateTime (FormatterCommand(..))
> import Data.List (fromFoldable)
> format (fromFoldable [ YearFull ]) bottom
"000-271820"