[Feature] support 2D-array data

[xiaoluoHe]

What problem does this feature solve?

support frequently used data format:

• 2d-array:

const data = [
    ['product', '2015', '2016', '2017'],  
    ['Matcha Latte', 43.3, 85.8, 93.7],  
    ['Milk Tea', 83.1, 73.4, 55.1],  
    ['Cheese Cocoa', 86.4, 65.2, 82.5],  
    ['Walnut Brownie', 72.4, 53.9, 39.1]   
] 

• Column based key-value format

const data = [
   'product': ['Matcha Latte', 'Milk Tea', 'Cheese Cocoa', 'Walnut Brownie'],
    'count': [823, 235, 1042, 988],
    'score': [95.8, 81.4, 91.2, 76.9]
] 

• Row based key-value

const data = [
    {product: 'Matcha Latte', count: 823, score: 95.8},
    {product: 'Milk Tea', count: 235, score: 81.4},
    {product: 'Cheese Cocoa', count: 1042, score: 91.2},
    {product: 'Walnut Brownie', count: 988, score: 76.9}
]

What does the proposed API look like?

none