CTAN Update: tcolorbox

[CTAN Announcements]

Thomas F. Sturm submitted an update to the

                tcolorbox

package.

Version:  4.20 2019-03-02
License:  lppl1.3

Summary description:  Coloured boxes, for LaTeX examples and theorems, etc

Announcement text:
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 - bug fix (#60): \multicolumn could not be used for first cell with option 'tabularx'

 - internal colors names renamend and offially documented (Section 9.5 Color Names):
   'tcbcolframe', 'tcbcolback', 'tcbcolbacktitle', 'tcbcolbacklower',
   'tcbcolupper', 'tcbcollower', 'tcbcoltitle'

 - listingsutf8 compatability better documented (#58)

 - semantic changed for options: 'after upper*', 'after lower*'

 - new options: 'before upper*', 'before lower*', 'titlebox', 'nirvana'

 - library 'skins':
   * new options: 'beamer hidden', 'beamer alerted', 'hide', 'alert'
   * option 'only' moved from package to skins library

 - new documentation section '13 Beamer Support'

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

The package’s files themselves can be inspected at
   http://mirror.ctan.org/macros/latex/contrib/tcolorbox/

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   Thanks for the upload.

     For the CTAN Team
    Petra Rübe-Pugliese

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