Space Key (32) from the enchant.ENV.KEY_BIND_TABLE example has been
defined in the PREVENT_DEFAULT_KEY_CODES by default.

I think, that only events defined in the KEY_BIND_TABLE should be
defined in the PREVENT_DEFAULT_KEY_CODES by default
Merge pull request #301 from illfang/allowSpaceKey

Space Key (32) from the enchant.ENV.KEY_BIND_TABLE example has been defined in the PREVENT_DEFAULT_KEY_CODES by default.