* Update `add_license` script
* run script
* add `remove duplicate lines script` and run it
* Revert changes `English spaces`
* strip whitespaces
* Revert `GPL` in files with `apache/mit license`
* don't append `gpl license` in files with other lic
* Don't append `gpl header` in files with other lic.
* re-ran script
* include c and cpp files too
* remove duplicate header
* rebase nit
* 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
Afri Schoedon
Niklas Adolfsson
Marek Kotewicz
Anton Gavrilov
Robert Habermeier