Allow Single Read for backwards compatibility

CHANGELOG.md

 # v1.0.3
 **User Facing**
-* Endness metadata "Single Read" changed to "Single End" in data-hub, pipeline updated to handle (#110)
+* Endness metadata "Single Read" changed to "Single End" in data-hub, pipeline updated to handle (#110) ("Single Read" still acceptable for backwards compatibility)
 
 **Background**
 * Add memory limit (75%) per thread for samtools sort (#108)

workflow/rna-seq.nf

@@ -343,6 +343,10 @@ process parseMetadata {
     elif [ "\${endsRaw}" == "Paired End" ]
     then
       endsMeta="pe"
+    elseif [ "\${endsRaw}" == "Single Read" ]
+    # "Single Read" depreciated as of Jan 2021, this option is present for backwards compatibility
+    then
+      endsMeta="se"
     elif [ "\${endsRaw}" == "nan" ]
     then
       endsRaw="_No value_"