Lidar Base Specification 2020 rev. A is now available

The 3DEP Lidar Base Specification 2020 rev. A is now available! 

This release of the Lidar Base Specification (LBS) introduces a new version naming convention to aid in tracking revisions and to clarify the year of release. This and following releases will labeled with "YYYY rev. L" where YYYY is the year of the release and L is a letter corresponding to the order of the release.