## Description
Tiny optimization: no need to do string formatting to prefix a string with one character.
---
### Author Checklist
*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*
I have...
- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [x] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [x] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [x] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [x] added a changelog entry to `CHANGELOG.md`
- [x] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [x] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
* WIP: using encoding config
* Make it compile, test fails
* test should be okay
* Make tests pass
* Add comments
* Convert more tests
* Make TestAnteHandlerSigErrors work
* Make first 2 tests pass
* TestAnteHandlerAccountNumbers
* Use table tests
* Remove print
* Use test table
* TestAnteHandlerSigErrors
* TestAnteHandlerAccountNumbers
* TestAnteHandlerAccountNumbers
* Refactor TestAccount
* Refactor getSignBytes
* TestAnteHandlerAccountNumbersAtBlockHeightZero
* TestAnteHandlerSequences
* TestAnteHandlerFees
* TestAnteHandlerMultiSigner
* TestAnteHandlerBadSignBytes
* TestAnteHandlerSetPubKey
* TestAnteHandlerSigLimitExceeded
* TestCustomSignatureVerificationGasConsumer
* TestAnteHandlerReCheck
* Make all tests pass
* Refactor a little bit more
* Fee test
* SetupTest
* All tests pass
* Refactor to RunTestCase
* Don't use StdFee
* Revert some little stuff
* Finish up last couple of test cases
* Less verbose
* s/TxGenerator/TxConfig
* Add comments
* Indent
* Move KeyTestPubAddr to testdata
* Move testdata to /testutil
* Revert to use signature: nil step in signing
* Add comments
Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>
Robert Zaremba
Alessio Treglia
Amaury Martiny
Aaron Craelius
sunnya97
Ethan Buchman