Allow $-based operator modifiers to be saved in tx.Transactions
Allow $-based operator modifiers to be saved in tx.Transactions

Update packaging / unpackaging methods to allow commands with mongoDB $
- prefixed operator modifiers (e.g. $each) to be saved to and retrieved
from tx.Transactions collection without throwing MongoDB errors.

This is a partial fix to #14

To completely support these operator modifiers, need to correctly set
inverse operations too.

rjsmith/meteor-transactions,rclai/meteor-transactions,JackAdams/meteor-transactions,rclai/meteor-transactions,JackAdams/meteor-transactions,Data-Meister/meteor-transactions,rjsmith/meteor-transactions,JackAdams/meteor-transactions-old,JackAdams/meteor-transactions-old,Data-Meister/meteor-transactions