Merge remote-tracking branch 'origin/2.4-maintenance' into 2.4-mainte… …nance
Complete build requirement update to C++17 (PDAL#3710) Reverse (correct) LAZDEBUG logic.
Remove OCI.
Release prep.
Update release notes.
Fixes for clang10. (PDAL#3221)
Changes for release. (PDAL#2993) * Changes for release. * Add release notes.