Eya, thanks for the PR! We actually did consciously decide up to now not to support extension properties (FixedHeader is an optional extension) as it puts the whole point of strict configuration checking up for discussion. Also, it's possible to set options non-strictly on the client side (ref. https://omines.github.io/datatables-bundle/#javascript).
However I'll merge this PR as I see it's a real problem implementers have to cope with, and I've opened a tracking issue at https://github.com/omines/datatables-bundle/issues/20 to discuss better fundamental support for extensions.
Eya, thanks for the PR! We actually did consciously decide up to now not to support extension properties (FixedHeader is an optional extension) as it puts the whole point of strict configuration checking up for discussion. Also, it's possible to set options non-strictly on the client side (ref. https://omines.github.io/datatables-bundle/#javascript).
However I'll merge this PR as I see it's a real problem implementers have to cope with, and I've opened a tracking issue at https://github.com/omines/datatables-bundle/issues/20 to discuss better fundamental support for extensions.
Thanks again!