CTAN update: siunitx

[CTAN Announcements]

Joseph Wright submitted an update to the

                   siunitx

package.

Version:  3.1.0 2022-04-25
License:  lppl1.3c

Summary description:  A comprehensive (SI) units package

Announcement text:
----------------------------------------------------------------------

 ### Added
 - Support for complex numbers in polar form both as input and output
 - Support for multiple uncertainty values in both short and long form
   in input, and supporting options `uncertainty-descriptors`,
   `uncertainty-descriptor-mode` and `uncertainty-descriptor-separator`
 - Options `text-subscript-command` and `text-superscript-command` to allow
   customisation of script printing in text mode (see issue
     [\#595](https://github.com/josephwright/siunitx/issues/595))
 - Options `complex-angle-unit`, `complex-mode`, `complex-symbol-angle`,
   and `complex-symbol-degree` to support complex numbers in polar form
 - Options `digit-group-size`, `digit-group-first-size` and
   `digit-group-other-size` to control digit grouping
 - Options `display-per-mode` and `inline-per-mode` to offer additional
   flexiblity in `per-mode` control
 - Option `per-symbol-script-correction`
 - Option `power-half-as-sqrt`
 - Option `retain-negative-zero`
 - Option `round-zero-positive` to control the outcome of rounding
   negative values to zero
 - Options `zero-decimal-as-symbol` and `zero-symbol` to support conversion of
   a zero decimal part to a dash or other symbol
 - Option setting `per-mode = single-symbol` to allow exactly one symbol to be
   present
 - Unit abbreviations `\C`, `\nC`, `\uC`, `\mC` (see issue
   [\#575](https://github.com/josephwright/siunitx/issues/575))
 - Unit abbreviations `\fH` and `\pH` (see issue
   [\#596](https://github.com/josephwright/siunitx/issues/596))
 - Unit abbreviation `\nW` (see issue
   [\#596](https://github.com/josephwright/siunitx/issues/596))
 - Brazilian and Portuguese translations for lists and ranges (see issue
   [\#514](https://github.com/josephwright/siunitx/issues/514))

 ### Changed
 - Issue an error if the `units` package is loaded

 ### Deprecated
 - Option setting `per-mode = symbol-or-fraction`

----------------------------------------------------------------------

The package’s Catalogue entry can be viewed at
   https://ctan.org/pkg/siunitx

The package’s files themselves can be inspected at
   https://mirrors.ctan.org/macros/latex/contrib/siunitx/

------------------------------------------------------------------------

   Thanks for the upload.

     For the CTAN Team
    Petra Rübe-Pugliese

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