Table syntax

[hupili]

After studying so many markdown extensions, I find that people tend to make table syntax complex, which contrasts the original philosophy of markdown.

I eventually find a simpler but yet powerful one from markdown-here:

| Tables | Are | Cool |
| ------------- |:-------------:| -----:|
| col 3 is | right-aligned | $1600 |
| col 2 is | centered | $12 |
| zebra stripes | are neat | $1 |

The design principle is very similar to that of evermd.
Difference:

• Delimeter: I prefer the latex one but both are OK.
• markdown-here's syntax support easier per-column alignment setup.
• evermd's syntax support easier cell span.

Hard to say which one is better.

Table is a useful object in documents, but we still have not found a perfect solution yet.