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@@ -5,6 +5,15 @@
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### New features
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* Proxies: added the proxy contracts from OpenZeppelin SDK. ([#2335](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2335))
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+#### Proxy changes with respect to OpenZeppelin SDK
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+
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+Aside from upgrading them from Solidity 0.5 to 0.6, we've changed a few minor things from the proxy contracts as they were found in OpenZeppelin SDK.
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+
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+- `UpgradeabilityProxy` was renamed to `UpgradeableProxy`.
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+- `AdminUpgradeabilityProxy` was renamed to `TransparentUpgradeableProxy`.
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+- `Proxy._willFallback` was renamed to `Proxy._beforeFallback`.
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+- `UpgradeabilityProxy._setImplementation` and `AdminUpgradeabilityProxy._setAdmin` were made private.
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+
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### Improvements
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* `Address.isContract`: switched from `extcodehash` to `extcodesize` for less gas usage. ([#2311](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2311))
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Francisco Giordano