release-0.2.6

Christophe Bécavin (9):
      Put back nextflow in main branch for MultiQC tests
      Add plot_celllimit argument for table export limit. In order to allow multiqc to manage the plots.
      Change the QC tables by adding directly rank of each cells for each QC metric (This was previously done in MultiQC)
      Fix celllimit argument and QC tables export
      Create nfworkflow.py, and add all workflow related scrpts
      Remove all files related to workflow; Moved them to nf-core-checkatlas
      Remove dependecies nextflow, multiqc and clean toml project
      Prepare for test release without workflow (all moved to nf-core-checkatlas)
      release: version 0.2.6 🚀

drbecavin (1):
      Merge pull request #37 from becavin-lab/multiqc