* copy and assignment operator for state
copy and assignment operator for transition
remove unused const_casts
address comments
check for null in copy constructor
up
use init and fini functions from rcl
remove unused include
* explicitly zero initialize state and transitions
* add todo comment for follow up
* comply with unused warnings
* fix flakiness and add test for transitions
* mark flaky test
* duplicate const char * in State constructor
* linters
* correct year in license
* mark flaky test
