Pymyku

Update login mechanism

[[+] Added campus code to search_subject_open](https://github.com/phusitsom/pymyku/commit/b183e1ac9e9457a1ba7b86ed28bb5afcb7bba151)

**Full Changelog**: https://github.com/phusitsom/pymyku/compare/v0.2.2...v0.2.3

Changelog
- [[+] Fixed AttributeError in get_enrolled_subject](https://github.com/phusitsom/pymyku/commit/ffa2ac01482651f1b13c5522408bb491f17d324a)

**Full Changelog**: https://github.com/phusitsom/pymyku/compare/v0.2.1...v0.2.2

** Changelog
- [Renamed Client.search_subject_id to Client.search_subject](https://github.com/phusitsom/pymyku/commit/d505dcadd4f6c1aa7876ac489bb2aea042b2180d)

**Full Changelog**: https://github.com/phusitsom/pymyku/compare/v0.2.0...v0.2.1

Changelog
- Renamed request.request_login to request.login
- Renamed request.request_logout to request.logout

**Full Changelog**: https://github.com/phusitsom/pymyku/compare/v0.1.12...v0.2.0

What changed
- Added Client.search_section_detail
- Updated documentation containing examples and API responses sample

**Full Changelog**: https://github.com/phusitsom/pymyku/compare/v0.1.11...v0.1.12