Added autoreleasepool around statements in saveWithBlock calls
Merge branch 'release/3.0' of https://github.com/magicalpanda/MagicalRecord into release/3.0
update expecta
Log no stack context error on release builds
Merge branch 'release/3.0' of https://github.com/magicalpanda/MagicalRecord into release/3.0
update specta
Remove code signing from Project settings
Switch Expecta submodule back to mainline, as my patches there have been merged
Use new MagicalRecordStack defaultStack in tests
Remove all tests and test targets
Add checks for NSBooleanAttributeType and NSStringAttributeType in the NSAttributeDescription data import category
Always import if no `-(BOOL)shouldImport<#Attribute#>:(id)data` method is implemented
Make creation/deletion methods on NSManagedObject more consistent
Rename `+ MR_defaultURLForStoreName:` and `+ MR_urlForStoreName:` to
`+ MR_fileURLForStoreName:` and `+ MR_fileURLForStoreNameIfExistsOnDisk:`

This should make their purpose clearer, although I still have some concerns
about `+ MR_fileURLForStoreNameIfExistsOnDisk:` being public, namely that it's
not something the library should need to provide to users of this category.
Adds `options` dictionary to all of the NSPersistentStore creation methods

This is in support of not having to specify a default stack, and also creating
temporary entities without a managed object context.
Adds `MR_isEntityDeleted` to the NSManagedObject+MagicalRecord category

NSManagedObject's `isDeleted` method does not work reliably. Checking if the
object's NSManagedObjectContext is nil in addition to the standard `isDeleted`
method is one way of determining if the object has been (or will be) deleted.
Conversion of dates on import should assume GMT, not the user's current locale
Remove commented out code
Formatting and method ordering
Add method to delete a persistent store at a provided URL, along with all sidecar files (`-shm` and `-wal`)