Updated CHANGELOG
Added comment
Added flag and check for whether to use CoreSymbolication
Added header file for CoreSymbolication
Renamed flag for CoreSymbolication
Added methods for getting symbolicator and owner from CoreSymbolication
Lookup symbol info directly via SCBinaryInfo

NOTE: This is to avoid accessing header and owner, which may/will be removed.
Extract symbol owner upon first request

NOTE: This ensures that accessing owner will properly extract it (by first
      setting up header).
Determine executable, encrypted, slide properties on-demand
Header and owner are now private vars (instead of public properties)
symbolForAddress now returns SCSymbolInfo, supports CoreSymbolication
Don't use CS check for symbolicatorRef and ownerRef
Removed debugging message
Added way to extract methods without using Symbolication framework
In local symbols, close filedes on error
Use methodsForBinaryFile() to retrieve methods
Always use CoreSymbolication for retrieving symbol and source info

NOTE: CoreSymbolication has been available since iOS 4.
Added offsetAndSizeOfBinaryInFile()
Replaced isEncrypted() with non-Symbolication based version
Removed no longer used symbolAddressesForImageWithHeader()