Support Batch Requests

[jaspermendiola]

https://iexcloud.io/docs/api/#batch-requests

[bingxie]

I plan to add this in version 1.2.0

[aviemet]

Any plans to implement this? Looking up company data one at a time is a bottleneck for the application I'm writing.

[dblock]

Any plans to implement this? Looking up company data one at a time is a bottleneck for the application I'm writing.

Please contribute.