* webkit does not allow "in" as a key in an object

tim shaub 10/23
===============

 * wheelChange (deltaz = scale)

 * test -- test another way, jsdoctest
        -- env.js

-- touch for --

1. sketch handlers
2. draw feature
3. feature control

DrawFeature -> Handler: path, polygon, point
DragFeature ->
ModifyFeature (drag, scale, rotate) -> FeatureHandler 

FSUMF