delete all should truncate the sequence id as well
Throw exception

If an exception happens during a transaction, throw it so it can be handled by the method that initiated the transaction.
Update SugarTransactionHelper.java
Merge branch 'master' of github.com:rajatpandit/sugar
fix delete
fix byte[] saving and loading
Merge branch 'patch-1' of github.com:luccascorrea/sugar