* drop python 3.5 support
* dvc: remove fspath() use inside os.path calls
* dvc: replace dvc.compat.fspath with os.fspath
* tests: replace dvc.compat.fspath with os.fspath
* utils: relpath() should use fspath/str
* utils: os.readlink doesn't support path-like obj on Windows until 3.8
* dvc: use lockfile as yaml instead of json
* refactor Dvcfile into Pipeline file and Single stage file
* fix tests
* dvc: fix outputs
* add more tests for collection of outputs
* add tests for data cloud/get/import/ls
* tests: test for checkouts
* Allow other checksums other than md5
* tests: use iterdir instead of os.listdir
* cleanup errors reported by cc and ds
* utils: throw DvcException instead of plain Exception
* tests: use yaml.load instead of json.load
* run: split assignments
* Update dvc/stage/exceptions.py
Co-authored-by: Ruslan Kuprieiev <[email protected]>
Some things are fixed along the way:
- no cache shared between incompatible funcs
- some incosistent exceptions are now consistent
- import updates for git files now works both for dvc and git repos
- "auto-generated-upstream already exists" fixed
- dvc.api.open()/read() works with git repos now
Fixes#3124, #2976. Closes#3172.