Fix/pre commit isort

See merge request detectors/pycalibration!434

Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Wed Feb 24 21:04:47 2021 +0100

    Add link to wiki dev guidelines to readme

commit 0d902b2b
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 22:25:40 2021 +0100

    Add .git-blame-ignore-revs file preemptively

commit 9e6030a3
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 18:55:55 2021 +0100

    Fix import order

commit d7ca8e96
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 18:52:24 2021 +0100

    Add notes on skipping checks, set to allow failure true,  break import order again

commit a6f43240
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 18:38:08 2021 +0100

    Fix import order

commit 2854f22b
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 18:08:35 2021 +0100

    Add accidentally removed dependencies

commit 9ecbc83e
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 18:06:45 2021 +0100

    Add additional details to the readme

commit 6342f2e6
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 16:33:47 2021 +0100

    Export SHA var as it's used during pre-commit itself

commit a142df25
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 15:50:24 2021 +0100

    Swap lines to make more sense

commit 95183eb5
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 15:50:09 2021 +0100

    Add a script for easy execution of diff-only pre-commit checks

commit b98fed75
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 14:11:13 2021 +0100

    Add todos, adjust headings

commit d6b83d8b
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 13:49:16 2021 +0100

    Update README.rst

    Change to be compliant with RSTcheck
    Fix some heading orders and enumerated lists
    Update the setup instructions

commit db768d61
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 12:12:29 2021 +0100

    Sort requirements

commit 43122cd3
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 22 12:12:06 2021 +0100

    Add pre-commit to requirements

commit 797af5db
Author: Cyril Danilevski <cyril.danilevski@xfel.eu>
Date:   Tue Feb 9 11:19:30 2021 +0100

    blabla

commit 6179aaa5
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 8 11:22:54 2021 +0100

    Add comments to clarify non-standard sections

commit cae49ef4
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 8 11:12:19 2021 +0100

    Use consistent isort version

commit c4d550a2
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 8 11:09:45 2021 +0100

    Check if MR commit SHA is set

commit aceded4b
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 8 10:52:12 2021 +0100

    Add pre-commit configuration

    Pretty standard setup

    Worth mentioning that flake8 is set to only run on the diff between current
    branch and merge target

    This will not work outside of a merge request

commit c5b8d367
Author: Robert Rosca <robert.rosca@xfel.eu>
Date:   Mon Feb 8 10:50:37 2021 +0100

    Update CI to work with pre-commit

    Check stage tries to find the commit hash being merged into

    Uses that hash to get  a list of changed files

    Passes this list of files to pre-commit so that checks only run on
    modified files