Cake: Upgrade NUnitConsoleRunning in an attempt to get us building on…

… AppVeyor again.

Add paging support for getting an album's tracklist.

Fix build issues.

Fix build issues.

Merge local/todofixme

Squashed commit of the following:

commit ceedd850cfae3d151dcd8a592cd35e7f7d6ca8b3
Author: Ewan <[email protected]>
Date:   Mon Feb 10 21:11:27 2020 +0000

    Remove catch branch when not needed.

commit 995a58f9620282cdc4950a7e632fdecbd7a330c6
Author: Ewan <[email protected]>
Date:   Mon Feb 10 21:08:10 2020 +0000

    More cleanups inside classes.

commit 0454da4bd651cfd2b49d5cb9fb940199040861a6
Author: Ewan <[email protected]>
Date:   Mon Feb 10 21:05:17 2020 +0000

    Cleanup of some of the ArtistEndpoint, incl. adding a few unit tests.

commit 01bdd6f625ed6a31c4b8e1b3272966b77954b9e3
Author: Ewan <[email protected]>
Date:   Mon Feb 10 20:56:22 2020 +0000

    Clean up some more comments inside the Track class.

commit 0d72ae155bb95fa5cee5f6e833706679db18e876
Author: Ewan <[email protected]>
Date:   Mon Feb 10 20:53:06 2020 +0000

    Clean up some comments inside the Error class.

commit 19a23ca93dab2930c9c6663e046845bcf067f59a
Author: Ewan <[email protected]>
Date:   Mon Feb 10 20:50:31 2020 +0000

    Implement proper error message should a Collection be passed a non json array object.

commit 3f9d70b131136dd66f4b95faab73cec5e6b27caf
Author: Ewan <[email protected]>
Date:   Mon Feb 10 20:47:01 2020 +0000

    Remove a FIX ME from the GetById LiveAPI tests relating to property name changes.

Uprev for v4.2.2

Update README.md

V4.2 release.

UPdated Readme for V4.1.0 release

Updated readme.