* workflows/bio/variation.workflow: Add
Merge branch 'develop' into feature/variantcallingworkflow
* rules/bio/ngs/tools/gatk.rules: Remove add_section statements
* snakemakelib/config.py: Add conversions to BaseConfig
* test/test_config.py: Update test for init_sml_config
Merge branch 'hotfix/gatk-add-section'
Merge tag 'gatk-add-section' into develop

Remove add_section statements
Merge branch 'develop' into feature/methylseq