fix: spaces on a newline after a table (#2319)

* fix: rename inconsistent function

* fix: newline with 1~4 spaces below table

* fix: format html test

* fix: specify spaces only

* fix: specify spaces only

* fix: detect tab

* fix: detect tab

* fix: newline at the end of html

Author: cyanxiao

src/Tokenizer.js

@@ -355,7 +355,7 @@ export class Tokenizer {
         type: 'table',
         header: splitCells(cap[1]).map(c => { return { text: c }; }),
         align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-        rows: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : []
+        rows: cap[3] ? cap[3].replace(/\n[ \t]*$/, '').split('\n') : []
       };
 
       if (item.header.length === item.align.length) {

test/specs/new/tab_newline.html

@@ -0,0 +1,38 @@
+<table>
+    <thead>
+        <tr>
+            <th>y</th>
+        </tr>
+    </thead>
+    <tbody>
+    <tr>
+        <td>x</td>
+    </tr>
+    </tbody>
+</table>
+<table>
+    <thead>
+    <tr>
+        <th>y</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr>
+        <td>x</td>
+    </tr>
+    </tbody>
+</table>
+<table>
+    <thead>
+    <tr>
+        <th>y</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr>
+        <td>x</td>
+    </tr>
+    </tbody>
+</table>
+<pre><code>code
+</code></pre>

test/specs/new/tab_newline.md

@@ -0,0 +1,12 @@
+| y |
+| - |
+| x |
+ 
+| y |
+| - |
+| x |
+    
+| y |
+| - |
+| x |
+    code