0.3.3

1. Fix bug "\"foo" => "\\\"foo"
2. Add tags to Series structure
3. Fix typo on swith_database
4. Add ci
5. fmt
6. Impl std::iter::Iterator for Points
7. Impl std::error::Error for Error
8. Change function "write_points" to generic
9. Fix test
10. Impl Deserialize, Serialize to Error, Series, Point

Refactor this project

Break change.

1. Fix bug:
   • line serialize bug:
     • Value::Integer(1) => "1i";
     • Value::String("ss".to_string()) => "ss";
2. Add query result struct
3. Add udp and https support
4. Add integration testing