Cao-lang

Refactor

- Implement Default for OwnedValue ([3fcdb00](3fcdb0021d581acfb45705ef9e58ba046f3f0b04))
- Do not take ownership of OwnedValue when inserting ([db142a7](db142a71ec3fc3bb5d1e6ef327b436a05aa18c83))

Break

- Use structs for the inner OwnedValue::Object representation ([25953e7](25953e73e08f0566c014b0d53ac7bb2912715104))

Features

- Allow constructing FieldTables from iterators ([e8cf6e1](e8cf6e1044758adfa0c6767a3d74bdcfbffd456e))
- Add OwnedValues that allow users to save and load Values between VM instances ([a33ba9d](a33ba9df4e1f5b855efe2d123e5fc1e92774ff9d))

Refactor

- Implement Clone for KeyMap and CompiledProgram ([8809f99](8809f9965995baf4269aa0c0243f69732daa5b39))

Refactor

- Disallow null field when deserializing modules ([f66de49](f66de49b845cd4f5cf160b887f4aa11b6e907541))

Bug Fixes

- Fix serialization of modules ([6c78661](6c78661d5284e71c255e635a5b51b877fd27a6a6))

Refactor

- Honor the cargo target dir environment variable if present in the C API ([9021739](90217397533303e0d3dbe4de467a1ee5b6ee27d9))

Bug Fixes

- Fix Module serialization ([dba1885](dba18852aa6de638d2f9277cad746dbec798b007))

Bug Fixes

- Fix potential lifetime issue in the Python wrapper ([046f98d](046f98d61325034bfd5b442e1bfb5d4ea50855de))

Features

- Support `null` values in Module deserializing ([09c6d89](09c6d89df2ddb7cf4f66d6df67c843abb45768a7))