Lab and Downward Lab 8.4

[Jendrik Seipp]

Hi everyone,

I'm happy to announce a new version of Lab and Downward Lab (https://lab.readthedocs.io). Here are the most important changes:

Lab
    Allow fetching from compressed properties files (Jendrik Seipp).
    Use absolute paths in Slurm scripts to safeguard against .bashrc changing directories (Jendrik Seipp).
    Use 9 GiB memory limit for Slurm jobs on Tetralith by default (Jendrik Seipp).
    Revise documentation about memory limits (Jendrik Seipp).
    Remove soft memory limit from Slurm jobs that used to guard against an old problem of the cgroup mechanism failing (Jendrik Seipp).
    Remove documentation about obsolete infai_1 partition in Basel (Florian Pommerening).
    Add SlurmEnvironment.is_present() method for testing whether the script is run within a given grid environment (Jendrik Seipp).
    Raise minimum supported Python version to 3.8 (Jendrik Seipp).

Downward Lab
    Add add_compress_exp_dir_step() to example Fast Downward experiment (Jendrik Seipp).

To upgrade to the latest version, use "pip install --upgrade lab" (preferably in a virtual environment) or "uv add lab==8.4".

Cheers,
Jendrik