modules: tidy

Author: vladimir-ch

go.mod

@@ -6,8 +6,12 @@ require (
 	golang.org/x/exp v0.0.0-20191002040644-a1355ae1e2c3
 	gonum.org/v1/gonum v0.11.0
 	modernc.org/cc v1.0.1
+	modernc.org/xc v1.0.0
+)
+
+require (
+	github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 // indirect
 	modernc.org/golex v1.0.1 // indirect
 	modernc.org/mathutil v1.4.1 // indirect
 	modernc.org/strutil v1.1.1 // indirect
-	modernc.org/xc v1.0.0
 )