Ethtx

Changed
- Removed support for optional parameters in mongo, due to different tiers of
atlas [152](https://github.com/EthTx/ethtx/pull/152)
- Removed the formatting of `transfer.value`, so the value remains
unchanged [152](https://github.com/EthTx/ethtx/pull/152)
- Renamed a variable in `README.md` [152](https://github.com/EthTx/ethtx/pull/152)
- `black` formatting [152](https://github.com/EthTx/ethtx/pull/152)

Fixed
- Break dynamic array decoding if there are no more available parameter
- Fixed `DecodedTransfer.value` type (str -> float) [144](https://github.com/EthTx/ethtx/pull/144)
- Fixed `README` mongo string [140](https://github.com/EthTx/ethtx/pull/140)

Changed
- Make more flexible deps - `ethtx` is easier to install in other apps [140](https://github.com/EthTx/ethtx/pull/140)
- No timeout for mongo cursor - some collections may sometimes require more time to
search [140](https://github.com/EthTx/ethtx/pull/140)

Added
- Cache `4bytes` response, if some transactions have a lot of guessed functions/events, it definitely speeds
up `ethtx`! [140](https://github.com/EthTx/ethtx/pull/140)
- Added an option to recreate semantics used for transaction decoding [148](https://github.com/EthTx/ethtx/pull/148)

Fixed
- Caught exception for ens where there is no code associated with the specified
address [137](https://github.com/EthTx/ethtx/pull/137)
- Fixed wrong transaction metadata types [136](https://github.com/EthTx/ethtx/pull/136)

Changed
- Skip compiled structure from `4bytes` [138](https://github.com/EthTx/ethtx/pull/138)
- Updated black `pre-commit` version [136](https://github.com/EthTx/ethtx/pull/136)
- Updated tests [136](https://github.com/EthTx/ethtx/pull/136)

Added
- Added optional fields `from_address` and `to_address` to DecodedTransactionMetadata
model [136](https://github.com/EthTx/ethtx/pull/136)

Fixed
- Gracefully handle errors for evaluating value of transfers [133](https://github.com/EthTx/ethtx/pull/133)

Changed
- Add placeholder names for not decoded parameters [131](https://github.com/EthTx/ethtx/pull/131)

Fixes
- Fix decoding of strings with special characters [127](https://github.com/EthTx/ethtx/pull/127)
- Fix incorrect usage of Web3.toChecksumAddress [128](https://github.com/EthTx/ethtx/pull/128)
- Fix decoding of Transfers that use invalid ERC20/ERC721 events [129](https://github.com/EthTx/ethtx/pull/129)