Added basic VoiceOver support to DTAttributedTextContentView.
Modified demo text view controller to hide non-visible content views to avoid conflicts with VoiceOver.
Invalidate accessibility elements when explicitly setting the layout frame.
Created view proxy for accessible attachments as subviews.
Merge upstream.
Re-added accessibility files to project.  Documented DTAccessibilityViewProxy
Documented DTAccessibilityElement.  Modified the designated initializer.
Documented layout frame accessibility element generator.
Added some comments.  Implemented hash/isEqual in view proxy.
Increased min required versions for podspec
Merge branch 'develop' of github.com:Cocoanetics/DTCoreText into develop
Merge branch 'develop'
Merge pull request #412 from x3dhydra/accessibility

Basic VoiceOver Support
Merge branch 'master' into develop
Removed defunct property
Updated podspec
added iOS 6 issues to known issues doc
Merge branch 'release-1.6'
restored global CoreText header import
Advanced submodule ref to DTFoundation 1.4.4