Bump web3 from 3.16.4 to 5.2.1

[dependabot-preview[bot]]

Bumps web3 from 3.16.4 to 5.2.1.

Changelog

*Sourced from [web3's changelog](https://github.com/ethereum/web3.py/blob/master/docs/releases.rst).* > v5.2.1 (2019-10-17) > =================== > > Improved Documentation > ---------------------- > > - Update documentation for unlock account duration ([\#1464](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1464)) > - Clarify module installation command for OSX>=10.15 ([\#1467](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1467)) > > Misc > ---- > > - [\#1468](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1468) > > v5.2.0 (2019-09-26) > =================== > > Features > -------- > > - Add `enable_strict_bytes_type_checking` flag to web3 instance ([\#1419](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1419)) > - Move Geth Whisper methods to snake case and deprecate camel case methods ([\#1433](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1433)) > > Bugfixes > -------- > > - Add null check to logsbloom formatter ([\#1445](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1445)) > > Improved Documentation > ---------------------- > > - Reformat autogenerated towncrier release notes ([\#1460](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1460)) > > Web3 5.1.0 (2019-09-18) > ======================= > > Features > -------- > > - Add `contract_types` property to `Package` class. ([\#1440](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1440)) > > Bugfixes > -------- > > - Fix flaky parity integration test in the whisper module ([\#1147](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1147)) > > Improved Documentation > ---------------------- > > - Remove whitespace, move `topics` key -> `topic` in Geth docs ([\#1425](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1425)) > ... (truncated)

Commits

- [`b5e7e79`](https://github.com/ethereum/web3.py/commit/b5e7e794326083b13d7f39a8c1cf3e2893f8347d) Bump version: 5.2.0 → 5.2.1 - [`31cb29e`](https://github.com/ethereum/web3.py/commit/31cb29e531345de5628ca86a73422ec42a22aafc) Correct newsfragment filenames - [`76a380d`](https://github.com/ethereum/web3.py/commit/76a380dc65376c7209446934bc9754616a0cd53b) Add missing newsfragments for release - [`724b0f5`](https://github.com/ethereum/web3.py/commit/724b0f5187b81fd05f13770e4b4aef95bebd63e9) Remove eth-account deprecation warnings - [`e290067`](https://github.com/ethereum/web3.py/commit/e290067fa8ae8837355cb5249ac020eebc50f9c6) Clarify module installation command for >=OSX 10.15 ([#1467](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1467)) - [`5b00bd4`](https://github.com/ethereum/web3.py/commit/5b00bd4622a554da91e8bc5e5eeca5bf17c2ca25) Change UnlockAccount duration ([#1464](https://github-redirect.dependabot.com/ethereum/web3.py/issues/1464)) - [`d753217`](https://github.com/ethereum/web3.py/commit/d7532174a9e6238073d7531679b5197f6fc5f907) Bump version: 5.1.0 → 5.2.0 - [`37a577d`](https://github.com/ethereum/web3.py/commit/37a577d96a7fd18116e1dc63a0d873dda31df7f8) Add missing release note - [`f997eb2`](https://github.com/ethereum/web3.py/commit/f997eb2a898c7667fb359aee8d02bc46bcdac333) Implement snake case methods for Geth whisper methods - [`2997cd8`](https://github.com/ethereum/web3.py/commit/2997cd8b3954deff24d248d19b48a440163d520d) Change towncrier title format, move release notes title to top of file - Additional commits viewable in [compare view](https://github.com/ethereum/web3.py/compare/v3.16.4...v5.2.1)

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[dependabot-preview[bot]]

Superseded by #224.