0.9-alpha.4

The 0.9-alpha.x.y series will mirror RAC 4 pre-releases while still allowing new development

This release targets RAC 4.0-alpha.4

Added

• Functional tests for UIKit extensions (#59). Thanks @skyylex!
• UILabe.rex_textColor extension (#62). Thanks @iv-mexx!
• Documentation for UIButton.rex_pressed (#58). Thanks @skyylex!
• Boolean logic for composing PropertyType values (#48).

Improved

• Simplified creation of extension properties (#69, #70). Thanks @ikesyo!
• Refactor NSObject.rex_valueProperty using associatedProperty (#68). Thanks @ikesyo!

Fixed

• Fixed failing tests (#61). Thanks @iv-mexx!
• Fix associated object key shadowing (#65).