changelog update

CHANGELOG.md

 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [unreleased]
+### Added
+
+### Changed
+
+* rapidrun all_samples.tsv replaced by all_samples.csv with `;` as separator
+
+### Removed
+
+* Unuseful or deprecated config files
+
+
 ## [1.1.3] - 27st july 2020
 
 ### Added