added support for blacklist

[KevinMenden]

Added support for a configuration file/ blacklist for the nf-core modules bump-versions command.

This is a .yml file which can be filled with module names. The module is completely ignored if False is given:

e.g.
star/align: False

If a version is given, the module is updated/downgrade to that version (if it's different):

star/align: "some version"

So you can either set it to False or to a specific version.

Fixes #1142

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[codecov]

Codecov Report

Merging #1162 (e3b4490) into dev (b6542c8) will increase coverage by 0.03%.
The diff coverage is 77.46%.

@@            Coverage Diff             @@
##              dev    #1162      +/-   ##
==========================================
+ Coverage   70.58%   70.61%   +0.03%     
==========================================
  Files          48       48              
  Lines        5116     5139      +23     
==========================================
+ Hits         3611     3629      +18     
- Misses       1505     1510       +5     

Impacted Files	Coverage Δ
nf_core/modules/nfcore_module.py	96.00% <66.66%> (-4.00%)	⬇️
nf_core/modules/bump_versions.py	79.54% <73.46%> (+0.02%)	⬆️
nf_core/utils.py	83.84% <88.23%> (+0.20%)	⬆️
nf_core/lint/__init__.py	74.13% <100.00%> (-0.66%)	⬇️

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[ErikDanielsson]

LGTM 👍 Just a few small suggestions

[KevinMenden]

Thanks, good suggestions 😁