Moving merge and sort filters
Merge pull request #639 from PDAL/move-merge-and-sort-filters

Moving merge and sort filters
Move Reprojection filter
Fix typo in name of ZVelocity dimension
Merge pull request #642 from gadomski/zvelocity-name-typo

Fix typo in name of ZVelocity dimension
Merge pull request #643 from PDAL/move-reprojection-filter

Move Reprojection filter
optional plugin tests should also be dependent on WITH_TESTS
Merge branch 'master' of https://github.com/PDAL/PDAL into issues-599