feature request: eth_getLogs method

[yudikubota]

There are some missing methods in the Eth namespace.
It would be nice to have eth_getLogs for example.

[owenvoke]

Feel free to implement this method 👍🏻 You can see how this will need to be formatted in this documentation.

Let me know if you have any issues, or I'd be happy to try and implement this in future.