Start to use leveled log

cmd/obitools/obicount/main.go

@@ -34,7 +34,7 @@ func main() {
 	_, args, _ := optionParser(os.Args)
 
 	fs, _ := obiconvert.ReadBioSequencesBatch(args...)
-	nread, nvariant, nsymbol := fs.Count(true)
+	nvariant, nread, nsymbol := fs.Count(true)
 
 	if obicount.CLIIsPrintingVariantCount() {
 		fmt.Printf(" %d", nvariant)

cmd/obitools/obimultiplex/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"log"
+	log "github.com/sirupsen/logrus"
 	"os"
 	"runtime/pprof"
 

cmd/obitools/obipairing/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"log"
+	log "github.com/sirupsen/logrus"
 	"os"
 	"runtime/trace"
 

cmd/obitools/obipcr/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"log"
+	log "github.com/sirupsen/logrus"
 	"os"
 	"runtime/trace"
 

cmd/obitools/obiuniq/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"log"
+	log "github.com/sirupsen/logrus"
 	"os"
 	"runtime/pprof"