In `TMarker3DBox` when a box marker has a size equal to zero it is not painted. Painting it produced a dot with the X11 backend.

Support custom line styles in `TTeXDump` as requested [here](https://sft.its.cern.ch/jira/browse/ROOT-8215)

Mention update provided by Daniel Riley. See commit 7d2baf55 and ROOT-8217

unused color index:

Fix two issues with the fill patterns in `TTextDump` (reported here: https://sft.its.cern.ch/jira/browse/ROOT-8206):
    - The pattern number 3 was not implemented.
    - Filled area drawn with pattern where surrounded by a solid line.

* Spell check

  to paint candle plots (Georg Troska).

The text generated by TSVG has now the xml:space="preserve" as suggested here: https://sft.its.cern.ch/jira/browse/ROOT-8161.

 reported: https://root.cern.ch/phpBB3/viewtopic.php?f=3&t=21540&p=94053#p93981

  memory. That may generate some crashes like described [here](https://sft.its.cern.ch/jira/browse/ROOT-8123).

SVG boxes were not correct when x2<1 (reported [here](https://sft.its.cern.ch/jira/browse/ROOT-8126)).

  This option has been completely rewritten and offers a wide range of possibilities.
  See the THistPainter reference guide for all the details and examples.