Evm-extras

**Fixing Bugs**:
- If key in `contracts.json` was related only to abi (without addresses), `load_contracts` generated wrong output key. Right key - `<name>_abi`

**Fixing Bugs**:
- If `version` in `load_contracts` was set, there was an issue with path generation
- Adding types `NativeToken` and `Token`

What's Changed
* v0.2.2 by blnkoff in https://github.com/blnkoff/evm-extras/pull/1

**Full Changelog**: https://github.com/blnkoff/evm-extras/compare/v0.2.0...v0.2.2

Adding function encode_to_bytes32

**Full Changelog**: https://github.com/blnkoff/evm-extras/compare/v0.1.0...v0.1.2

First viable version of the package