* Add HasAccount to the AuthKeeper to save protobuf decoding time
We found in the Osmosis epoch time, the many accesses to GetAccount's proto unmarshalling was a significant slowdown.
This adds a HasAccount method to the AuthKeeper, and fixes one unnecessary spot that it appears within in SendCoins
* Update Spec
* Add Changelog entry
* Fix lint & use speedup in SendCoins
* Update x/auth/keeper/account.go
Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>
Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>