0.3.4

• Component-friendly: posh! now stores posh state inside the meta-data of the DataScript conn. There are now no global atoms and all is passed around in the conn.
• Breaking change: Removed before-tx!. You can bake up your own version of transact! in the rare case you need to add pre-transaction filters.
• New Feature: active-queries returns an atom that contains the set of all active queries for any rendered components. This info is helpful for syncing with the back-end.