add function test for wp user create
test deleting the previously created user
use WP_CLI::warning() instead of passing false to WP_CLI::error()
remove boilerplate feature description
add test for wp user generate
add ability to save result from previous command
replace 'return code should be 0' with 'it should run without errors'
make 'should run without errors' failure more descriptive
add missing $obj_type property to User_Command
disable unkown assoc warnings when a generic assoc specifier is present in the synopsis