Update API

• Update API
• Update tests

Make protocol public

Overview:

• Define OpenWeatherMapAPI as public protocol

Library updates

Updates:

• add async-await
• refactor error enums (breaking change)
• introduce protocols
• bump macOS and iOS supported versions

0.1.5

Add missing property to CityForecast model.

0.1.4

Add public constructors

0.1.3

• Refactor API method names. Add support to retrieve forecast weather. Update unit tests.
• Move response DTOs to new Response directory.

0.1.2

Update forecast model access modifiers to public.

0.1.1

• Retrieve forecast data via new One Call API endpoint which includes current and future weather information.
• Bump json from 2.2.0 to 2.3.1

0.1.0

Update WeatherAttributes to include feels_like property.

0.0.9

Rename OpenWeatherMap class to OpenWeatherMapService.