ink! v4.0.0
release is incoming. As mentioned in v4.0.0
pre-release page, substrate pallet-contracts later than this commit (shows up in polkadot-v0.9.32 branch for the first time) start to support ink! v4.0.0
.
Are there any backward incompatibility issues with ink! v3.4.0 or lower? which contracts developers need to be aware of. If yes, what exactly are they?