Log Message:
x11/lxqt-about: update to 0.15.0

lxqt-about-0.15.0 / 2020-04-24
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  * Bumped version to 0.15.0.
  * Avoid char raw strings literals memory allocations.
  * Don't use automatic string conversions.
  * Removed implicit casts definitions.
  * Fixed Razor-qt link.