Bump to CocoaPods 0.25.0
Consider assignment policies when mapping missing relationship values. fixes #1505
Fix ETag capitalization issues. closes #1597
Make test for RKReplaceAssignmentPolicy reject RKUnionAssignmentPolicy - due to operator precedence, it wasn't.
Don't reuse deleted objects when mapping a relationship without identificationAttributes
Merge pull request #1617 from percysnoodle/replacement_deletion_fix

Don't reuse deleted objects when mapping a relationship w/o identificationAttributes