[pdal-commits] [PDAL/PDAL] f44724: Add zsmooth filter (#3408)

[Andrew Bell]

  Branch: refs/heads/master
  Home:   https://github.com/PDAL/PDAL
  Commit: f447247ad56d1c4da9e1701b29186c87049e3993
      https://github.com/PDAL/PDAL/commit/f447247ad56d1c4da9e1701b29186c87049e3993
  Author: Andrew Bell <andrew.bell.ia at gmail.com>
  Date:   2021-04-09 (Fri, 09 Apr 2021)

  Changed paths:
    A doc/stages/filters.zsmooth.rst
    A filters/ZsmoothFilter.cpp
    A filters/ZsmoothFilter.hpp

  Log Message:
  -----------
  Add zsmooth filter (#3408)

* Add Zsmooth filter.

* Fix bad comment.

* Improve doc.