Changes:
- Turned off using subtle style for digits that are considered
insignificant. Negative numbers are shown all red. Set the new
option pillar.subtle_num to TRUE to turn it on again (default:
FALSE).
- The negation sign is printed next to the number again.
- Scientific notation uses regular digits again for exponents.
- Groups of three digits are now underlined, starting with the fourth
before/after the decimal point. This gives a better idea of the
order of magnitude of the numbers.
- Logical columns are displayed as TRUE and FALSE again.
- The decimal dot is now always printed for numbers of type
numeric. Trailing zeros are not shown anymore if all displayed
numbers are whole numbers.
- Decimal values longer than 13 characters always print in
scientific notation.
- New styling helper style_subtle_num(), formatting depends on the
pillar.subtle_num option.
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