Dvc

1) [Initial UI improvements for `dvc add`](https://github.com/iterative/dvc/pull/2546);
2) [Add support for S3 directories as external deps/outs](https://github.com/iterative/dvc/pull/2619);
3) [Exclude dvc/utils/compat.py from DeepSource analysis](https://github.com/iterative/dvc/pull/2670); Kudos sanketsaurav :tada:
4) [Dynamically adjust chunk_size when uploading to Google Cloud Storage](https://github.com/iterative/dvc/pull/2661);

1) [Fix ssh password/passphrase prompt collision with the progress bar](https://github.com/iterative/dvc/pull/2660);
2) [Major performance improvement for projects with large (> 1000 dvc-files) DAGs](https://github.com/iterative/dvc/pull/2668);

1) [Fix bug in short progress bars](https://github.com/iterative/dvc/pull/2663);

1) [Fixed warning in `dvc version`](https://github.com/iterative/dvc/commit/a0d364e78ad0ad5d10e30017829409d348f3c5f3);
2) [Removing leading `/` in `dvc import/get` path argument](https://github.com/iterative/dvc/pull/2651); Kudos SrividyaKK :tada:
3) [Added `--all-commits` support for `dvc gc`](https://github.com/iterative/dvc/pull/2643);
4) [Optimized fetching of imports from external repos](https://github.com/iterative/dvc/pull/2654);
5) [Fixed bug in directory cache collection](https://github.com/iterative/dvc/pull/2656);

1) [Fixed import order](https://github.com/iterative/dvc/pull/2636); Kudos Naba7 :tada:
2) [Disable progress bar when output is not a TTY](https://github.com/iterative/dvc/pull/2550);
3) [Deduplicate brancher entries](https://github.com/iterative/dvc/pull/2639);
4) [Deduplicate used cache entries](https://github.com/iterative/dvc/pull/2630);
5) [Fix bug in dvc repository lock that was making ~15 sec slow on Mac and on other systems with bad dns configuration](https://github.com/iterative/dvc/pull/2642);
6) [Fix bug in push/pull/status from http remote, which made dvc hit ulimit for opened file descriptors on Mac and Windows](https://github.com/iterative/dvc/pull/2646);

1) [Fixed extremely slow dvc repository locks caused by a CPython bug](https://github.com/iterative/dvc/pull/2628);