tabled/ fix Builder::push_column cannot create new rows (#392)

tabled/src/builder/table_builder.rs

@@ -287,6 +287,7 @@ impl Builder {
             }
 
             row.push(text);
+            self.data.push(row);
         }
 
         self.count_columns += 1;

tabled/tests/core/builder_test.rs

@@ -129,6 +129,44 @@ test_table!(
     "+---+---+---+---+"
 );
 
+test_table!(
+    push_column_2,
+    {
+        let mut b = Builder::default();
+        b.push_column(["a", "d"]);
+        b.push_column(["b", "e"]);
+        b.push_column(["c", "f"]);
+        b.push_column(["g", "h"]);
+        b.build()
+    },
+    "+---+---+---+---+"
+    "| a | b | c | g |"
+    "+---+---+---+---+"
+    "| d | e | f | h |"
+    "+---+---+---+---+"
+);
+
+test_table!(
+    push_column_3,
+    {
+        let mut b = Builder::default();
+        b.push_column(["a", "d"]);
+        b.push_column(["b", "e"]);
+        b.push_column(["c", "f", "f"]);
+        b.push_column(["g", "h"]);
+        let a: [&str; 0] = [];
+        b.push_column(a);
+        b.build()
+    },
+    "+---+---+---+---+--+"
+    "| a | b | c | g |  |"
+    "+---+---+---+---+--+"
+    "| d | e | f | h |  |"
+    "+---+---+---+---+--+"
+    "|   |   | f |   |  |"
+    "+---+---+---+---+--+"
+);
+
 test_table!(
     insert_column_0,
     {