[pdal-commits] [PDAL/PDAL] b20a5b: Add negation behavior to head/tail filters (#2405)

[Andrew Bell]

  Branch: refs/heads/master
  Home:   https://github.com/PDAL/PDAL
  Commit: b20a5b33836b59e96605746318ed6e43ae91278b
      https://github.com/PDAL/PDAL/commit/b20a5b33836b59e96605746318ed6e43ae91278b
  Author: Andrew Bell <andrew.bell.ia at gmail.com>
  Date:   2019-03-18 (Mon, 18 Mar 2019)

  Changed paths:
    M filters/HeadFilter.hpp
    M filters/TailFilter.hpp
    M test/unit/CMakeLists.txt
    A test/unit/filters/HeadTailFilterTest.cpp

  Log Message:
  -----------
  Add negation behavior to head/tail filters (#2405)

* Add inversion to head and tail filters.

* Add test.