storage in values array instead of object fields (fixes #2)
@mathka fix of to array with test

(i've lost it with last merge because it was not tested)
restore accidentaly deleted tests
toArray considers overriden getters (fixes #3)
allow reaching the original value, when overriding
Iterator2ArrayDecorator (codename ArrayatorDecorator)
add test to work with AppendIterator
pass-by all method calls in decorator
add JsonP support
change default callback param to jsonp-callback, fix typos
add reindexing (for appendIterator)
Fixed memorizing of exception (just like in BI)