Merge branch 'master' into master-milq

* master:
  Invalidate intrinsic content size when attributed text changes
Merge branch 'master' into master-milq

* master:
Merge branch 'master' into master-milq

* master: (61 commits)
  Add missing __bridge to casts in order to avoid errors building for iOS 6
  Adding Communication section to README
  Minor README copy-editing
  Add accessibility documentation to README
  Replace deprecated `leading` with `lineSpacing` in README.
  Bumping version to 1.10.0
  Replacing __LP64__ macros with more semantic  CGFLOAT_IS_DOUBLE
  [Issue #380] Taking minimumScaleFactor into account for automatic resizing of text
  [Issue #376] Fixing alignment and trunctionation issue on last line of text
  [Issue #385] Deprecating leading property, in favor of lineSpacing property
  [Issue #383] Reorganizing and refactoring boundingRectForCharacterRange:
  [Issue #383] Adding support for UIAccessibilityElement
  fix hitTest:WithEvent:
  Fixing precision warning with double to CGFloat conversion
  Changing return type of initWithFrame to instancetype
  [Issue #359] Implementing init, to allow for use with non-designated initializer with auto layout
  [Issue #372] Punching up documentation for active and inactive links
  [Issue #372] Minor code reformatting
  [FIX] lineHeightMultiple is ignored.
  [Issue #371] Opt out of inactive link styling when inactiveLinkAttributes is `nil` or empty.
  ...