Fix tables bug

[yaniswang]

When users want show table markdown code in codeblock, it will show a table, not code.

like this:

| Left-Aligned  | Center Aligned  | Right Aligned |
| :------------ |:---------------:| -----:|
| **col 3 is**      | some wordy text | $1600 |
| ~~col 2 is~~      | centered        |   $12 |
| zebra stripes | are neat        |    $1 |

[yaniswang]

Extenstion api is not strong enough, can't use subParser,globals.gHtmlBlocks...

[tivie]

@yaniswang Thanks.

You shouldn't need to call showdown.subParser('hashBlock') since blocks are not really allowed inside tables.

Extenstion api is not strong enough, can't use subParser,globals.gHtmlBlocks...

Also, in extensions, you should not call subParser directly at all since it's not meant for that.

[yaniswang]

I sugges save the table code in hash.

I add a extention latex, match by $xxx$

| Left-Aligned  | Center Aligned  | Right Aligned |
| :------------ |:---------------:| -----:|
| **col 3 is**      | some wordy text | $1600 |
| ~~col 2 is~~      | centered        |   $12 |
| zebra stripes | are neat        |    $1 |

Inline LaTeX: $E=mc^2$

If table not save in hash, it will render badly.

[tivie]

@yaniswang Sorry, do you mind explaining a bit further the problem you're having?