add convert-color-space configuration option
correct documentation for _selection property
Merge pull request #265 from adobe-photoshop/jrb/convert-color-profile

add convert-color-space configuration option
Merge pull request #266 from adobe-photoshop/jrb/update-DOM-doc

correct documentation for _selection property
layer comp poster image support

scale parameters seem to be broken - i believe this calculates and
passed them to PS properly
update on layer comp change
rebind when the document changes
better layer comp component tracking

ok to have an empty specName
allows “default 100%, 200% retina/@2x

cleanup layerCmp components on update
listen to index changes
clean up and refactor based on review comments

RTC - remove getPendingRenderPromise

refactor render requests during init

this makes it possible for derivations of AssetManager to defer
rendering requests