ah, Selector is NilLiteralConvertible
fixed SBCircleProgressIndicator rendering

bottom row of pixels is no longer getting cut off; corrected colors; reorganized the function a bit
shorter equivalent color construction
fixes/cleanup for Xcode 6.1
make a couple of initializers optional
slightly nicer workaround for text field int issue

(still not sure why this is necessary)
NSView methods for adding many constraints at once

extension providing addConstraintStrings, which assumes you have multiple format strings, are using the same metrics and views dictionaries for each, and don't need to pass in any options; and addSubviewsAndConstraintStrings, which adds views from the views dictionary as subviews if they do not have a superview already, before calling addConstraintStrings.
SBAboutView: autolayout
misc swift fixes
SBUserAgentView: autolayout
fix optional handling in isURLString
remove unnecessary selves
two shiny new operators !

a !! b
nil if a is nil, otherwise b or b(a!)
can be used analogously to the ternary operator: a !! b ?? c

a &! b
false if a is nil, otherwise b(a!)
SBGetLocalizableTextSetS returns optional tuple

instead of a tuple of optionals
improve style in a few delegate checks
change some NSString extension funcs to variables
spelling
remove rect keyword argument in SBRoundedPathS
SBBookmarkListItemView
renamed some enums to be more pleasing in swift