Merge pull request #1 from myoungwoon-kim/dev

Add unittest

Add unittest
[   12s] + ./sval
[   12s]
[   12s] running 26 tests
[   12s] test error::tests::convert_fmt_error_into_error ... ok
[   12s] test stream::owned::tests::owned_stream_method_resolution ... ok
[   12s] test stream::owned::tests::ref_mut_stream_method_resolution ... ok
[   12s] test stream::stack::tests::empty_map ... ok
[   12s] test stream::stack::tests::empty_seq ... ok
[   12s] test stream::stack::tests::end_empty_stack ... ok
[   12s] test stream::stack::tests::error_double_primitive ... ok
[   12s] test stream::stack::tests::error_end_incomplete_seq ... ok
[   12s] test stream::stack::tests::error_end_incomplete_map ... ok
[   12s] test stream::stack::tests::error_end_map_as_seq ... ok
[   12s] test stream::stack::tests::error_end_map_at_root_depth ... ok
[   12s] test stream::stack::tests::error_end_seq_as_map ... ok
[   12s] test stream::stack::tests::error_end_seq_at_root_depth ... ok
[   12s] test stream::stack::tests::error_map_key_outside_map ... ok
[   12s] test stream::stack::tests::error_map_value_outside_map ... ok
[   12s] test stream::stack::tests::error_map_value_without_map_key ... ok
[   12s] test stream::stack::tests::error_primitive_without_map_key ... ok
[   12s] test stream::stack::tests::error_primitive_without_map_value ... ok
[   12s] test stream::stack::tests::error_primitive_without_seq_elem ... ok
[   12s] test stream::stack::tests::error_seq_elem_outside_seq ... ok
[   12s] test stream::stack::tests::fixed_depth::error_overflow_stack ... ok
[   12s] test stream::stack::tests::primitive ... ok
[   12s] test stream::stack::tests::simple_map ... ok
[   12s] test stream::stack::tests::simple_seq ... ok
[   12s] test stream::tests::stream_is_object_safe ... ok
[   12s] test value::tests::value_is_object_safe ... ok
[   12s]
[   12s] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s

Change _rust_libdir to _rust_dylibdir

Bump to rust-sval 0.5.2

Import sval 0.5.2