Dvc

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

1) [Fixed import order in `dvc/remote/base.py`](https://github.com/iterative/dvc/pull/2626); Kudos sofia100 :tada:
2) [Fixed import order in `dvc/__init__.py`](https://github.com/iterative/dvc/pull/2618); Kudos aloks98 :tada:
3) [Fixed bug in our progress bars on tiny terminals](https://github.com/iterative/dvc/issues/2598);

1) [Don't set default user when connecting to hdfs](https://github.com/iterative/dvc/pull/2622);

1) [Refactored repo lock logic](https://github.com/iterative/dvc/pull/2590);
2) [Caching cloned external repos for `dvc import`](https://github.com/iterative/dvc/pull/2583);
3) [Fixed our bash completion scripts for `dvc import-url` and `get-url` commands](https://github.com/iterative/dvc/pull/2596);
4) [Resetting dvcignore when reloading the DAG](https://github.com/iterative/dvc/pull/2604);
5) [Avoiding creating cache directory until we actually need it](https://github.com/iterative/dvc/pull/2597);
6) [Reduced verbosity of `dvc add`](https://github.com/iterative/dvc/pull/2607);
7) [Made help messages have consistent case](https://github.com/iterative/dvc/pull/2591); Kudos Hiyorimi :tada:
8) [Fixed bug in `import/get/import-url/get-url` commands, that caused incorrect output path resolution](https://github.com/iterative/dvc/pull/2610);
9) [Fixed logger to put warnings into stderr instead of stdout](https://github.com/iterative/dvc/pull/2612);
10) [Updated requirements for pyinstaller version](https://github.com/iterative/dvc/pull/2615);

1) [Fix bug in external cache directory](https://github.com/iterative/dvc/pull/2593); Kudos jahabdank :tada:
2) [Fix bug in dynamic version generation](https://github.com/iterative/dvc/pull/2592); Kudos irchanbani :tada:

1) [Improved README wording](https://github.com/iterative/dvc/pull/2571); Kudos jimmy1134 :tada:
2) [Escape paths when adding to gitignore](https://github.com/iterative/dvc/issues/2043);
3) [Fixed typo in `dvc commit` message](https://github.com/iterative/dvc/pull/2577); Kudos vgerak :tada:
4) [Adjusted pylintrc to correspond to flake8 and black configs](https://github.com/iterative/dvc/pull/2578); Kudos vgerak :tada:
5) [Reduced unecessary verbosity](https://github.com/iterative/dvc/pull/2576); Kudos vgerak :tada:
6) [Support opening git-controlled files with our API's `open()` method](https://github.com/iterative/dvc/pull/2566);
7) [Fix bug in mac pkg packages](https://github.com/iterative/dvc/pull/2586);