This will cause undesired behavior on future.get(), as
it will throw an ExecutionException, wrapping the internal
exception.
The response object will be inaccessible.

Revert "fix issue #84 https://github.com/koush/ion/issues/84"

This reverts commit f0cf95baa0e333298919ba4e9db1a01ae5ff50ef.
TransformFuture: remove from, and use "then".
Merge branch 'master' of https://github.com/koush/ion

# By Koushik Dutta
# Via Koushik Dutta
* 'master' of https://github.com/koush/ion:
  TransformFuture: remove from, and use "then".
  This will cause undesired behavior on future.get(), as it will throw an ExecutionException, wrapping the internal exception. The response object will be inaccessible.