SwiftUIRouter Versions Save

• Added currentStackIndex to Navigator (pull request #56)

• Fix issue #40

• Deprecated the path label in Route. Routes can now be initialized as Route("path/*") instead of Route(path: "path/*").
• Added support for DocC. Documentation can now be built and viewed in Xcode.
• Improved code documentation in comments.
• Added links to examples in the readme.

• Fixed out-of-bounds crash when navigating with replace on true.
• Fixed forward stack not updating accordingly with goBack().
• Added additional tests for goBack() and goForward().

• Added the replace parameter to the Navigate view. (#27)

• Made Navigator's init public.
• To go with it, Router now has an initializer allowing you to pass a manually initialize Navigator. This Navigator will be passed down as an Environment Object as usual.
• Added a convenience initializer to Route with @autoclosure.

• Made Navigator and NavigationAction Equatable.
• Added checks and error(s) for invalid path parameters. Parameters may only exist of alphanumeric characters (A-Z, a-z and 0-9) and must start with a letter.
• Updated README and code documentation regarding the limited characterset of parameter names.

• Fixed issue where the entire history stack could be emptied.
• Removed unused stack limit code/feature.

Upped supported watchOS version.

Almost completely rewritten from scratch.

Changes from the top of my head:

• Switch renamed to SwitchRoutes, to prevent conflict with SwiftUI's Switch.
• Link renamed to NavLink, to prevent conflict with SwiftUI's Link.
• Redirect renamed to Navigate.
• Renamed the HistoryData environment object to Navigator. A better descriptive name.
• Use an actual dictionary ([String : String]) to hold parameter values instead of the @ dynamicMemberLookup object in RouteInformation.
• All paths are now relative.
• Added support for an extra step of parameter validation in Route.
• Detailed documentation in the source code.
• Added tests.