Realm 0.85 has primary key support and does not allow it to change

[johanforssell]

This updates Realm-JSON to use Realm 0.85.

As this Realm version supports primary keys I needed to add a control when adding data in -mc_setValuesFromJSONDictionary:inRealm: so that it's not trying to write new data for a primary key.

I've not checked my solution thoroughly, but it's a suggestion as to what needs to be done to solve this problem.

[matthewcheok]

Hi Johan, it seems the official implementation of primary keys is rather similar to Realm+JSON. What problems are you experiencing exactly?

[matthewcheok]

Alright I see the issue now. I'd prefer to drop pre-existing support for primary keys and adopt the official one. Thanks for bringing this to my attention.

[matthewcheok]

Resolved. Note breaking change.

[johanforssell]

I find that you now have to wrap -createOrUpdateInRealm:withJSONDictionary: in [realm beginWriteTransaction]; and [realm commitWriteTransaction];. You should perhaps make a note of this in the Readme?

#1  0x0000000106c4c28a in RLMVerifyInWriteTransaction(RLMRealm*) at Pods/Realm/Realm/RLMObjectStore.mm:217
#2  0x0000000106c4c940 in RLMCreateObjectInRealmWithValue(RLMRealm*, NSString*, objc_object*, bool) at Pods/Realm/Realm/RLMObjectStore.mm:322
#3  0x0000000106c40e4a in +[RLMObject createInRealm:withObject:] at Pods/Realm/Realm/RLMObject.mm:94

[matthewcheok]

Again, good catch. Updated README.