* Optional offset and count added on client level
* Rpc interface extended
* Tests corrected
* Filtering code refactored a little bit
* Offset type was changed to usize
* Handling of block hash in offset added
* Offset reworked to number
* Trailing comma removed
* Import for Quantity type added
* Offset and count moved into filter object
* Lost comma removed
* Return empty vec instead of None in case of incorrect range