Force sequence reading to produce lowercase sequences.

Adds two columns to the obiclean ratio csv file

pkg/obiseq/biosequence.go

@@ -11,6 +11,7 @@
 package obiseq
 
 import (
+	"bytes"
 	"crypto/md5"
 	"fmt"
 	"strconv"
@@ -370,7 +371,7 @@ func (s *BioSequence) SetSequence(sequence []byte) {
 	if s.sequence != nil {
 		RecycleSlice(&s.sequence)
 	}
-	s.sequence = sequence
+	s.sequence = bytes.ToLower(sequence)
 }
 
 // Setting the qualities of the BioSequence.

pkg/obiseq/predicate.go

@@ -209,9 +209,7 @@ func ExpressionPredicat(expression string) SequencePredicate {
 	f := func(sequence *BioSequence) bool {
 		value, err := exp.EvalBool(context.Background(),
 			map[string]interface{}{
-				"annot":     sequence.Annotations(),
-				"count":     sequence.Count(),
-				"seqlength": sequence.Len(),
+				"annotations":     sequence.Annotations(),
 				"sequence":  sequence,
 			},
 		)