[iOS] Resolve Warning 0108 (#64)

[iOS] Resolve Warning 0108 (#64)

[iOS] Resolve warning 0114

`Selected` is overridable, but current behavior is to hide it, so we're
going to add the `new` keyword.

[iOS] Resolve warning 0618

[iOS] Resolve warning 0414, 0649, 0169

[iOS] Resolve warning 0105

Update dispose to override base dispose (#67)

Add an optional extended description…