Clemens Niederberger submitted an update to the
chemformula
package.
Version: 4.12b / 2015-09-08 License: lppl1.3
Summary description: Command for typesetting chemical formulas and reactions
Announcement text: ----------------------------------------------------------------------
trim spaces of ch input (adapt to a change in l3kernel)
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This package is located at http://mirror.ctan.org/macros/latex/contrib/chemformula/
More information is at http://www.ctan.org/pkg/chemformula
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Thanks for the upload.
For the CTAN Team Petra Rübe-Pugliese