Add additional parameter to NewAnteHandler for custom SignatureVerificationGasConsumer (the existing one is now called DefaultSigVerificationGasConsumer).
Add addressVerifier field to sdk.Config which allows for custom address verification (to override the current fixed 20 byte address format).
DefaultSigVerificationGasConsumer now uses type switching as opposed to string comparison.
Other zones like Ethermint can now concretely specify which key types they accept.
Closes: #3685
frog power 4000
Frank Yang
Aaron Craelius
Artur Albov
svaishnavy