Filter out NSNotFound/kCFNotFound ranges

Improve AXValue interface

Resolve warning by replacing generic get with specific types

AX/Sources/AX/AXValue.swift:130:13: Forming 'UnsafeMutableRawPointer' to a variable of type 'V'; this is likely incorrect because 'V' may contain an object reference.

Fix dictionary literal explicit type needed warning

Error descriptions

Casting that should fail test coverage

Formatting

Make more API available back to 10.10

Update Readme

Unschedule