blanks-around-tables (like MD031 and MD032 for fences/lists)

[DavidAnson]

Original issue for context: https://github.com/DavidAnson/vscode-markdownlint/issues/43

[jpluimers]

An incomplete babelmark2 reproduction of

# 1

- aa
  | key | value  
  |-----|-------  
  | 1   | xx  
  | 2   | yy  
- bb

  | key | value  
  |-----|-------  
  | 1   | xx  
  | 2   | yy  

- cc
    | key | value  
    |-----|-------  
    | 1   | xx  
    | 2   | yy  
- dd

    | key | value  
    |-----|-------  
    | 1   | xx  
    | 2   | yy  

- ee

This was after bumping into blackfriday rendering issues which I need to wait for our internal Go lang based git repository has been updated to the most recent blackfriday so I can check how it behaves now.

[riuson]

Example from Microsoft Team Foundation Server, rendering markdown file.

Code:

#### 0x0209 [1] Offset

Request:
| Field    | Type    | Meaning         |
| :------- | :------ | :-------------- |
| address  | uint8_t | Device address. |
| standard | float   | Standard value. |

Answer: empty.

#### 0x020a [1] Scale

Request:

| Field    | Type    | Meaning         |
| :------- | :------ | :-------------- |
| address  | uint8_t | Device address. |
| standard | float   | Standard value. |

Answer: empty.

Screenshot: