Have acronym keywords returned in upper case

[vsobolmaven]

Hi,

Would it be possible to have acronym keywords found in input text returned in upper case by the keyword parser? Currently, all keywords are in lower case in the results, I am sure for some good reason. As we feed parsed keywords back to a search engine which makes distinction about abbreviations from proper words when ranking matches, so I would currently go to post-process keywords and make acronyms from input text back to upper case as a workaround but maybe it would be useful enough to have it handled by the tool natively.

Thank you for the great and promising library you have implemented.