version++
show error no at errored method(select_*/insert/update etc)
add Changes
add manifest(only author_test)
update Changes
quote bound parameters in error message
add all testcases for methods using handle_exception()
accept empty(omitted) value in *_named (methods using named_bind)
making localize %Carp::Internal
Merge branch 'rel-0.17' into error_message_improve
Merge branch 'rel-0.17'

Conflicts:
	Changes
update Changes
using lib/SQL/Executor.pm works, but it is hard to understand
Merge branch 'rel-0.17'