Module projection 

Deriving current state from history, and explaining history to humans.

Structs

FieldDiff

One human-readable field difference.

TimelineEntry

A readable history entry.

Functions

apply

Apply one event to the current state.

diff

Field-level differences between two states of a record.

project

Replay a complete history. Returns None for an empty history.

timeline

Replay a history and describe each step. Works on filtered histories (gaps are tolerated) by diffing only the events present.