* SDK: Refactor (read|write)_keypair
Split file opening and data writing operations
Drop filename == "-" stdio signal. It is an app-level feature
* keygen: Move all non-key printing to stderr
* keygen: Adapt to SDK refactor
* keygen: Factor keypair output out to a helper function
* split wallet staking commands
* elide real home
* unit->UNIT for usage
* unit->UNIT, don't try to run SUBCOMMANDS: ;)
* more fixup
* fixups
* actually check
* shellcheck
* preserve #6158 after rebase
* fixup
* test
* too hard
* remove test
Trent Nelson
Justin Starry
Rob Walker
Tyera Eulberg