Fix iPad activity sheet crash on iOS 7

• Aardvark no longer crashes when getting logs off a device via the share sheet (UIActivity​View​Controller) on iPads running iOS 7.

Better iPad support

• Properly present log viewer action item popover on iPad
• Made ARKLogDistributor's defaultLogStore nonnull so it could be used as a parameter in nonnull methods
• Cleaned up ARKLogStore initialization, properly declaring init and new as NS_UNAVAILABLE

Work around iOS 9 bug which prevented filing multiple bugs

• Worked around iOS 9 bug (see #11). Fix does not affect iOS 8.
• Exposed unavailable init methods in the header for compile-time checking.
• More reliable tests.

Declared all methods and variables as nullable or nonnull

• Better support for Swift
• Fixed Xcode 7 / iOS 9 build issue (per #8)
• Requires Xcode 6.3 or later

Add convenience methods

• Add logStores accessor to ARKLogDistributor
• Add ability to turn off name prefixing when ARKLogStore prints to console via prefixNameWhenPrintingToConsole

Fix deprecation warning

• Use getBytes:length: instead of getBytes:

Initial Release

Your Logs Slurped, Your Bugs Licked