Update CHANGELOG

Author: drpatelh

CHANGELOG.md

@@ -8,13 +8,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### `Added`
 
 * [#138](https://github.com/nf-core/chipseq/issues/138) - Add social preview image
+* [#153](https://github.com/nf-core/chipseq/issues/153) - Add plotHeatmap
 * [nf-core/atacseq#63](https://github.com/nf-core/atacseq/issues/63) - Added multicore support for Trim Galore!
 * [nf-core/atacseq#71](https://github.com/nf-core/atacseq/issues/71) - consensus_peaks.mLb.clN.boolean.intersect.plot.pdf not generated
 * [nf-core/atacseq#75](https://github.com/nf-core/atacseq/issues/75) - Include gene annotation versions in multiqc report
 * [nf-core/atacseq#76](https://github.com/nf-core/atacseq/issues/76) - featureCounts coupled to DESeq2
 * [nf-core/atacseq#79](https://github.com/nf-core/atacseq/issues/79) - Parallelize DESeq2
 * [nf-core/atacseq#97](https://github.com/nf-core/atacseq/issues/97) - PBC1, PBC2 from pipeline?
 * Update template to tools `1.9`
+* Replace `set` with `tuple` and `file()` with `path()` in all processes
 * Capitalise process names
 * Parameters:
   * `--skip_peak_qc` to skip MACS2 peak QC plot generation