This is in response to Issue 312.
MR_inContext: works on objects with temporary IDs
Merge branch 'master' of github.com:NealEhardt/MagicalRecord
I'm closing this PR in favour of #540 (which doesn't include the unnecessary merge, but still credits you directly for the change). I'm going to write some tests for this in the morning before I merge it into develop properly — thanks for the PR, and please accept my apologies for taking so long to merge the changes in.