This is preparation work to add a new linter that will enforce this new sorting.
The command used was:
`isort --profile=black --line-length=79 test/functional/abc*`
The rationale for `--profile=black` is that this generate the same style of multiline imports that we already use: one import per line with trailing commas, use parentheses, ensure newline before comments.
Also, black is increasingly popular as a python liner and we may want to use it instead of `autopep8` some day in the future. So it is a good idea to stay compatible.
The rationale for `--line-length=79` is that it is the standard for autopep8, and is more strict (hence compatible with) black which uses 88.
Note that it also orders the imports by type: `CONSTANT_VARIABLE`, the `CamelCaseClass`, then `functions_and_variables`.
It can also affect the number of blank lines after the imports: one line before simple variables, two lines before top-level classes and functions.