cluster tools: typing & refactoring (#858)

* python 3.7+, update mypy

* unrelated commit

* partial typing, organize executors into modules

* more typing, refactor utils

* try fn

* Revert "try fn"

This reverts commit 3016dfc.

* ignore errors for py3.8

* fix Future subscription

* allow unused kwargs in init

* fix __cfut_options usage

* CI: don't fail-fast for webknossos-linux tests

* more typing

* fixes

* more fixes

* some job-ids are ints

* fix kube.py

* ensure job_ids are strings

* fix linter and tests

* Update cluster_tools/cluster_tools/_utils/string.py

Co-authored-by: Philipp Otto <[email protected]>

* apply PR feedback

* rename to reflection

* readd debugging var

---------

Co-authored-by: Philipp Otto <[email protected]>

Author: jstriebel

.github/workflows/ci.yml

@@ -139,6 +139,7 @@ jobs:
       matrix:
         python-version: [3.7, 3.8, 3.9]
         group: [1, 2, 3]
+      fail-fast: false
     defaults:
       run:
         working-directory: webknossos