Ethtx

Changed
- Bumped `web3` to ~6 and adapted code to breaking changes [191](https://github.com/EthTx/ethtx/pull/191)
- Simplified stringification process of `Decimal` objects [192](https://github.com/EthTx/ethtx/pull/192)

Fixed
- Deleted invalid cache wrapper on get_erc20_token in web3provider [187](https://github.com/EthTx/ethtx/pull/187)

Changed
- Bumped `web3` to 5.28.0 and removed no longer necessary `eth` dependecies [178](https://github.com/EthTx/ethtx/pull/178)
- Set field `DecodedEvent.value` and `DecodedTransfer.value` as Decimal [179](https://github.com/EthTx/ethtx/pull/179)
- Removed `requests-cache` dependencies and replaced with standard `requests` [180](https://github.com/EthTx/ethtx/pull/180)

Fixed
- Fixed missing `decoded_value` in `parameters` of decoded events [171](https://github.com/EthTx/ethtx/pull/171)
- Fixed `Web3ENSProviderENSProvider` resolution [178](https://github.com/EthTx/ethtx/pull/178)
- Fixed **major issue regarding loss of decimal precision** for `value` field in decoded models `Argument`,
`DecodedCall` and `DecodedTransfer` [179](https://github.com/EthTx/ethtx/pull/179)

Fixed
- Fix output decoding for reverted calls[172](https://github.com/EthTx/ethtx/pull/172)
- Fix missing decoded_value in parameters decoding for events [173](https://github.com/EthTx/ethtx/pull/173)

Fixed
- Fixed amount calculation for NFT transfers [169](https://github.com/EthTx/ethtx/pull/169)
- Fix decode_static_argument doubling 0x prefix in bytes type [168](https://github.com/EthTx/ethtx/pull/168)

Changed
- Refactored/split `utils` code [156](https://github.com/EthTx/ethtx/pull/156)
- Refactored `SignatureProvider` [156](https://github.com/EthTx/ethtx/pull/156)
- Removed `cache` from signature Cursor object [156](https://github.com/EthTx/ethtx/pull/156)
- Updated logging [156](https://github.com/EthTx/ethtx/pull/156)

Fixed
- Updated `requests-cache` version. Pipenv could not handle the bad dependencies in this
package [157](https://github.com/EthTx/ethtx/pull/157)
- Fixed guessing function (problem with writing to and reading from the
base) [156](https://github.com/EthTx/ethtx/pull/156)