Add in change log.

CHANGELOG.md

@@ -14,6 +14,13 @@
     * note: if multiple bcl files are detected then cellranger_count design file is not created
 * If too many (or too large) .tar(.gz) bcl files are placed in one run, aws runs appears to fail possibly due to timeout on staging
 
+# v2.2.0-indev
+**UserFacing**
+* Astrocyte now uses singularity and config files
+
+**Background**
+* Refactor configs for astrocyte
+
 # v2.1.5
 **UserFacing**
 * Check Design File for spaces in name and file contents