Adds two new custom format accessors:

• datetime
• iso8601Python

The first release!

...and as with all my projects, I like to choose a release naming schema. In this case, its going to be fruit! So say hello to the first release, Mango!

This release is the base release, so I'll cover things broadly.

• Base Date extension API for String operations added. This covering;
  • A custom fromString initialiser
  • An asString method to return the Date object as a String in a DateFormatter.Style or custom format (and fixed locale, if passed)
  • A toString alternative method syntax that you can use instead of asString
  • The three above method have automatic localisation to the devices locale unless told otherwise, so that can help keeing your app localised easily
  • Computed string properties for;
    • Day
    • Month
    • Year
• Full coverage testing, see the GitHub actions for a coverage report
• Clear and concise documentation, although please feel free to improve it in any way necessary!
• Made with love