(De)serializtion for enums with unnamed fields

[DmitrySamoylov]

Hey!
I've added (de)serialization for enums with unnamed fields.

  #[derive(YaSerialize, PartialEq, Debug)]
  pub enum Enum {
    Simple,
    Field(String),
    FullPath(std::string::String),
    Integer(i32),
    UserStruct(OtherStruct),
    OptionString(Option<String>),
    OptionUserStruct(Option<OtherStruct>),
    Strings(Vec<String>),
    Ints(Vec<i32>),
    Structs(Vec<OtherStruct>),
    #[yaserde(rename = "renamed")]
    ToRename(u32),
  }

Now almost all types of enum fields are supported:

\	Unit	Named	Unnamed
Ser	v	x	v
De	v	v	v

[coveralls]

Pull Request Test Coverage Report for Build 98

• 102 of 176 (57.95%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+5.6%) to 42.193%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
yaserde/tests/serializer.rs	51	53	96.23%
yaserde_derive/src/de/expand_struct.rs	0	4	0.0%
yaserde_derive/src/ser/expand_enum.rs	0	32	0.0%
yaserde_derive/src/de/expand_enum.rs	0	36	0.0%

Totals
Change from base Build 95:	5.6%
Covered Lines:	789
Relevant Lines:	1870

---

💛 - Coveralls

[MarcAntoine-Arnaud]

Thank you ! Do you need a new package release with it ?

[MarcAntoine-Arnaud]

Can we check on the README the Enum with complex types support ?

[DmitrySamoylov]

Thank you ! Do you need a new package release with it ?

Yeah, that would be cool.