User defined ignore-list for words

[mwip]

I am loving langtool! Thanks for your work!

In addition to #16 I would ask whether there is the possibility to add a user-defined list of words to ignore. E.g. "TODO", or "citep" (I am using org-ref a lot).

I had a quick look through the LT docs but did not find anything of value. Maybe someone has more experience with LT.

[mwip]

This could even be extended to a buffer specific ignore list for org-documents. Maybe via

#+langtool-ignore: TODO citep