Pysteamauth

- Reduced versions of dependencies

- Using another method for Steam authorization requests which receive bytes

- New method of calculating confirmation hash
- Ability to define custom exceptions for various http status codes from Steam
- Removed method of cookie cleaning from cookie storage
- Method for checking errors from Steam
- New exceptions for Steam errors
- Steam class has beginned receive new parameters
- New method to get Steam sessionid
- Methods to get steamid and authenticator data

- Steam authorization using protobuf
- Steam error handling
- Requests with Steam session
- Ability to define custom exceptions