Lazy-map 1.0

Create lazy maps from data or from java objects. Entry points are the `core/lazy-map` and the `iop/extend-lazy-map` macros.

lazy-map.core

Create lazy-maps, whose values are only calculated when they are looked up for the first time, see lazy-map

Public variables and functions:

lazy-map.iop

Turn arbitrary Java objects into lazy maps, see extend-lazy-map.