Make OmniSharp#stdio#FindHighlightTypes replayable
Make OmniSharp#stdio#FindHighlightTypes replayable

Previously only the text-property version of this function was marked as
replayable, meaning that older stdio Vims didn't get highlighting
automatically when the server was loaded.

OmniSharp/omnisharp-vim,OmniSharp/omnisharp-vim,OmniSharp/omnisharp-vim