Resolve "Tests for astrocyte"

Closes #39

See merge request !27

Removed secondary singularity version.

Resolve "Annotate peaks"

Closes #32

See merge request !26

Resolve "Blacklist of regions"

Closes #31

See merge request !25

Resolve "Add fragment size distribution"

Closes #27

See merge request !24

# Conflicts:
#   .gitlab-ci.yml

Merge branch '31-BlacklistRegions' of git.biohpc.swmed.edu:BICF/Astrocyte/atacseq_analysis into 31-BlacklistRegions

Resolve "TSS enrichment score"

Closes #30

See merge request !22

# Conflicts:
#   workflow/conf/multiqc_config.yaml
#   workflow/tests/test_experiment_qc.py