Merge commit '29eeb282' of github.com:OpenZeppelin/openzeppelin-contracts into patches

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

* updated docs for governor votes, 0 is against not for

* Revert unecessary changelog entry

Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

* Add a MerkleProof.processProof utility function

* Add changelog entry

* fix lint

* return index when processingProof

* fix lint

* fix test

* Apply suggestions from code review

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

* improve documentation

* Apply suggestions from code review

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

* remove index - see discussion in the PR

* update changelog

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

* #890: Add ECDSA#toEthSignedMessage for bytes type

* refactor

* add test, refactor

* select overloaded function explicitly

* use short test message string

* add changelog entry

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>

* Add MultiPaymentSplitter

with ERC20 support on top of the existing PaymentSplitter

* consistency and linting

* Add MultiPaymentSplitter tests

* fix lint

* add changelog entry

* add MultiPaymentSplitter to documentation

* rework PaymentSplitter to include ERC20 support by default

* remove test file for MultiPaymentSplitter

* fix lint

* completelly split erc20 and token tracking

* address some PR comments

* add notice about rebasing tokens

* fix minor error in tests

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>
Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Joey Santoro <joseph.santoro@duke.edu>

revokeRole emits {RoleRevoked} event if `account` has been revoked `role`

Greetings from ChainSecurity!

Allow Governor + CompoundTimelock to manage native tokens (eth) in and out of the timelock contract. (#2849)

* Change GovernorTimelockCompound to support ETH in Timelock

* refactor compound timelock module

* Allow governor to receive ETH is executor == address(this)

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
(cherry picked from commit 6241995a)

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>