ethers/v5.0.0-beta.140 (2019-06-12 01:25)

• Move from node-fetch to cross-fetch; better browser fallback implementation. (826ffbc)
• Added getStatic with support for inheritance of static methods. (5e4535e)
• Fixed node-fetch for Safari (todo: push this fix upstream to node-fetch). (7164e51)
• Migrated XMLHttpRequest to fetch API. (#506; 62201c5)

ethers/v4.0.30

• No longer use hard-coded id of 42 in Web3Provider. (384fc32)

ethers/v5.0.0-beta.139 (2019-06-11 17:55)

• Removed freeze option from deepCopy; all properties are read-only and only objects may have new properties added. (1bc792d)
• Moved away from isNamedInstance which breaks after Browserify name mangling. (257d67c)
• Expose poll function in utils. (#512; e6f6383)
• Make TransactionResponse hash required. (#537; 095c1fe)

ethers/v5.0.0-beta.138 (2019-06-04 16:05)

• Fixed INFURA project ID checking. (#534; 5bf763f)

ethers/v4.0.29

• Fixed error in throwing an error for ABI decode. (#539; 92c978e)

ethers/v5.0.0-beta.137 (2019-06-01 14:06)

• Fixed invalid arrayify value in browser for SHA2-HMAC. ([#530](https://github.com/ethers-io/ethers.js/issues/ + issue); c4a494b)
• Fix event and function fragment formatting. (a2d4b29)
• Fixed default JsonRpcSigner. ([#532](https://github.com/ethers-io/ethers.js/issues/ + issue); 5ba6a61)
• Added changelog management to update-versions. (4a3f719)

ethers/v4.0.28

• Warn on deprecated INFURA API Token; use Project ID instead. (#462; 19587ee)
• Fixed typo in error message. (#470; 4a9373e)
• Export poll function. (#514; 2997bae)
• Fixed error message for unconfigured ENS names. (#504; 7075c8c)
• Fixed security recommendations (development deps only; not a problem, but quiets automatic audits).(a4a532f)

ethers/v4.0.27

• Increment JSON-RPC ID for JsonRpcProviders for environments that unsafely manage callbacks. (#489; c93b489)

ethers/v4.0.26

• Added goerli to InfuraProvider. (#421; 16c9745)

ethers/v4.0.25

• Added fastRetry to polling for JsonRpcSigner to improve polling for sent transactions. (#402; f318fd9)
• Fix waitForTransaction delay. (#424; c15a898)
• Fixed waitForTransaction and removeListener. (#410; 72edcd0)
• Updated BIP39 list in readme. (e4a2f8a)