Version bump to v1.8.0

Version bump to v1.7.2

Version bump to v1.7.1

Merge pull request #322 from DroneDB/improve-file-uploads

New upload dialog and other enhancements

Improved cache concurrency

Bumped version to v1.6.1

Merge pull request #319 from DroneDB/various-improvements

Various improvements

Updated submodule

Version bump to v1.4.4

Version bump to v1.4.3