TxReport resolve methods return a Long
DDatabase.entid returns Long
DEntity.id returns Long
DDatom trait uses primitives not DatomicData
fix use of DLong in tests
use pattern matching on DatomicData for query results

use `case DLong(e)` rather than `case e: DLong`
Merge pull request #18 from pellucidanalytics/topic/DLong

Prefer Long over DLong as a method return type