Edit : the bundle is no longer supported, see this announcement

I recently released version 3.0 of feed-io-bundle. Symfony 3.0 introduced a backward compatibility break in forms support, so it became impossible to maintain a code base compatible with both versions.

Symfony 2.x support

I created a branch called release/2.x to maintain feed-io-bundle version 2. It will last until the end of the Symfony 2.x official support. This branch will be used for bug fixes only, all the new features will be committed to the master branch.