make rpmkit.swapi.get_option_value (old name was set_option) more robust and consistent; type checks, add doctest cases and changed tne name to more appropriate one
move type checks from get_option_value to configure_with_options (both in rpmkit.swapi) not to check same objects more than twice
minor expression fixes in the docstring of rpmkit.swapi.configure_with_options
add doctest cases in rpmkit.swapi.configure_with_options and related changes
fix the severe bug in rpmkit.swapi that options passed via rpmkit.swapi.call is not processed correctly
update the latest changelog entry
update the Japanese translation