Update paired-end diff to skip this test.

Closes #65

See merge request BICF/Astrocyte/chipseq_analysis!60

Resolve "xcor.py, --random-source fails if file is too small"

Closes #30

See merge request BICF/Astrocyte/chipseq_analysis!58

Resolve "annotate peaks"

Closes #47

See merge request BICF/Astrocyte/chipseq_analysis!57

Resolve "Single control or experiment fails at call peaks macs"

Closes #58

See merge request BICF/Astrocyte/chipseq_analysis!54

Update test_generate_software_versions.py

See merge request BICF/Astrocyte/chipseq_analysis!56

Resolve "add plotProfile"

Closes #29 and #61

See merge request BICF/Astrocyte/chipseq_analysis!55