Version 0.5.0

Since 0.2.0:

• Added a new initializer to MapirServices use access token without adding it to info.plist.
• Changed errors to be more expressive.
• Removed MPS prefix from every class and struct name.
• Renamed MPSLocation to Place.
• Refactored the DistanceMatrix data structure. Finding distance between two place (by name) had O(N * M) time comlexity, but now it is O(1), So it's a lot faster.
• Added some utility methods to find distance and duration between places in DistanceMatrix.
• Refactored distanceMatrix(from:to:option:completionHandler) implementation. Input coordinates changed from [CLLocationCoordinate2D] to a [String: CLLocationCoordinate2D]. so every input coordinate has a name specified by the user itself and it helps to access distance and duration between coordinates by their name.
• Renamed search options to search categories.
• Changed search(for:around:categories:filter:completionHandler:) method result to a complete Search object. Search has a property named results of type `Search.Result> which contains the result of the search. This change helps user to have their selected options and categories along with the result of the search.
• Changed autocomplete(for:around:categories:filter:completionHandler:) to work the same as search(for:around:categories:filter:completionHandler:) to have the same functionality.
• Changed route(from:to:routeMode:routeOptions:completionHandler:) to route(from:to:mode:options:completionHandler:). "route" term seemed obvious.
• All of methods run their prepration in a concurrent thread instead of main (UI) thread.
• Changed result of the fastReverseGeocode(for:) to be the same as reverseGeocode(for:). an instance of ReverseGeocode.
• Added various documentation to the code itself.
• Removed unused and unnecessary files.
• Updated Examples and Playground files with the latest changes.