enum clarifications
random cleanup
refs #181: annotation drag re-architecting
 * long press on enabled annotation now begins drag
 * support changing of drag state with custom animations
 * default RMMarker to animated drag
 * added state change callback like MapKit
 * always defer to delegate for drag enabling instead of a property
 * remove unnecessary secondary pan gesture recognizer (for old drags)
refs #181 for correctness
refs #181: move drags according to gesture offset in layer
another MBTiles convenience method
formatting
refs #181: call super in all drag state changes
refs #181: fix drag z-index
fixes #327: more explicit string format specifiers and casts for 64-bit
fixes #280: throw exception on bad background cache bounds/zoom
fixes #328: optional delegate methods should truly be optional
company rename in contents
company rename in filenames
one last file rename
Merge branch 'develop' of git://github.com/mapbox/mapbox-ios-sdk into develop
added bundle