Document BlockStack and make linter happ[y/ier].

ansi/table.go

@@ -8,7 +8,7 @@ import (
 	"github.com/olekukonko/tablewriter"
 )
 
-// TableElements are used to render tables.
+// A TableElement is used to render tables.
 type TableElement struct {
 	writer      *tablewriter.Table
 	styleWriter *StyleWriter