* Recover private validator key
Added the ability to recover the private validator key from a given mnemonic when initializing the node
* Added CHANGELOG entry
* Reverted dependencies
* Added tests
* Fixed mnemonic checking as suggested and added tests
* Run make format and fixed go.sum checksum
* Run make format
* fix imports
* fix TestInitializeNodeValidatorFilesFromMnemonic
* Update CHANGELOG.md
Co-authored-by: Alessio Treglia <quadrispro@ubuntu.com>
Co-authored-by: Alessio Treglia <alessio@tendermint.com>
Co-authored-by: Alessio Treglia <quadrispro@ubuntu.com>