ethers/v4.0.12

• Added default provider support for Ethereum classic. (#351; bffc557)

ethers/v4.0.11

• Fixed 0 confirmation waiting. (#346; 048c571)

ethers/v4.0.10

• Fix spacing in checkArgument errors. (#318; 88f2f51)
• Do not replay block events when the provider event block is reset. (#343; 93152ef)

ethers/v4.0.9

• Force unorm shim when String.prototype.normalize is broken. (#338; 478aaf9)
• Better error message when normalize is missing. (fad902b)
• Added shims for React-Native support. (7bfaf29)

ethers/v4.0.8

• Updated dist files. (be0488a)

ethers/v4.0.7

• Fix for when blockTag is specified as a null equivalent value in contract overrides. (#329; 28a52cd)
• Added "debug" event for providers; do not depend on the format as it may change, but this should help debugging in most cases. (#320; 3a19f43)
• Fix for Kovan filters without an address. (#339; 4852e83)

ethers/v4.0.6

• Fixed lingering polling timer when no events left to process in a provider. (d54609a)
• Fixed utils.poll from mutating passed variables. (f682861)
• Fixed and refactored populating transaction values for signers. (#306; 023a20f)
• Fixed test cases for phantomjs (must use ES3 syntax). (e39cd84)

ethers/v4.0.5

• Fixed filtering with null non-indexed parameters. (#305; 6ac2d92)

ethers/v4.0.4

• Added optional blockTag to call; note that this may not behave as expected on all nodes. (#226; 493273d)
• Check all transaction parameters are valid; protect against typos. (#299; 84344ac)

ethers/v4.0.3

• Added address to HDNode. (#196; e39e2ed)
• Added French and Spanish to test-hdnode. (71f781d)
• Mark progressCallback as optional. (#293; b2db10e)